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13/05/2024, 08:30
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Andrew Brinkerhoff (Baylor University (US))13/05/2024, 09:00
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Peter Lewis (University of Hawaii)13/05/2024, 09:30
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Gabriella Carini (BNL)13/05/2024, 10:00
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Prof. Kendall Mahn (Michigan State University)13/05/2024, 11:00
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Keith Dienes (University of Arizona), Michael Procario (US Department of Energy)13/05/2024, 11:30
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Yuvaraj Elangovan (University of Pittsburgh (US))13/05/2024, 14:00Instrumentation
In this study, we present the development of a portable cosmic muon tracker tailored for both on-site measurements of cosmic muon flux and outreach activities. The tracker comprises two 7cm x 7cm plastic scintillators, wavelength shifting (WLS) fibers, and Hamamatsu SiPMs (S13360-2050VE). The detector utilizes plastic scintillator panels optically coupled to WLS fibers, transmitting...
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Tae Min Hong (University of Pittsburgh (US))13/05/2024, 14:00Machine Learning & AI
We present a decision tree-based implementation of autoencoder anomaly detection. A novel algorithm is presented in which a forest of decision trees is trained only on background and used as an anomaly detector. The fwX platform is used to deploy the trained autoencoder on FPGAs within the latency and resource constraints demanded by level 1 trigger systems. Results are presented with two...
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Gianantonio Pezzullo (Yale University)13/05/2024, 14:00
Charged Lepton Flavor Violation (cLFV) stands as a compelling frontier in the realm of particle physics, offering a unique window into the mysteries of flavor physics beyond the Standard Model. I will provide a comprehensive overview of the current experimental landscape and future prospects.
A survey of ongoing experimental efforts will be presented, highlighting recent breakthroughs and...
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Jessica Bolich13/05/2024, 14:00Other BSM
Natural anomaly-mediated Supersymmetry breaking (nAMSB) models arise from modifications to anomaly-mediated SUSY breaking models to avoid conflicts created by bounds from the Higgs mass, constraints from searches for wino-like WIMPS, and bounds from naturalness. nAMSB models still feature the wino as the lightest gaugino, but the higgsinos become the lightest EWinos. In nAMSB models with soft...
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Stephen Martin13/05/2024, 14:00Dark Matter
The lightest supersymmetric particles could be higgsinos that have a small mixing with gauginos. If the lightest higgsino-like state makes up some or all of the dark matter with a thermal freezeout density, then its mass must be between about 100 and 1150 GeV, and dark matter searches put bounds on the amount of gaugino contamination that it can have. Motivated by the generally good agreement...
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Jack Terrance Goldman (Los Alamos National Laboratory)13/05/2024, 14:00Neutrino Physics
Like the weak interaction itself, the Higgs coupling to the left chiral components of the Dirac bispinors for quarks "knows" which up goes with which down in the universal coupling. However, the simple conjecture that the right chiral components of each are not so distinguished provides for a consistent determination of the quark mass spectra and of
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the CKM matrix relating their mass... -
Ben Lillard (University of Oregon)13/05/2024, 14:00Dark Matter
The search for dark matter (DM) continues, with increasingly sensitive detectors at the WIMP scale, and novel detection techniques for discovering sub-GeV DM. In this talk I highlight two types of directionally sensitive experiments, in which the DM signal can be distinguished from the low-energy backgrounds. A new, highly efficient computational method can streamline the theory predictions,...
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Samuel Grant (ARGONNE NATIONAL LABORATORY)13/05/2024, 14:15Instrumentation
The Mu2e experiment at Fermilab will conduct a world-leading search for Charged Lepton Flavour Violation (CLFV) in neutrino-less muon-to-electron conversion in the field of a nucleus. In doing so, it will provide a powerful probe into physics beyond the Standard Model, which can greatly enhance the rates of CLFV processes. To accomplish this measurement, which will constitute an...
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Chosila Sutantawibul (Baylor University (US))13/05/2024, 14:15Machine Learning & AI
The Compact Muon Solenoid (CMS) detector at the CERN LHC produces a large quantity of data that requires rapid and in-depth quality monitoring to ensure its validity for use in physics analysis. These assessments are often done by visual inspection which can be time consuming and prone to human error. In this talk, we introduce the “AutoDQM” system for Automated Data Quality Monitoring in CMS...
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Xuheng Luo13/05/2024, 14:15Neutrino Physics
Upcoming cosmological surveys will probe the impact of a non-zero sum of neutrino masses on the growth of structures. These measurements are sensitive to the behavior of neutrinos at cosmic distances, making them a perfect testbed for neutrino physics beyond the standard model at long ranges. In this talk, I will introduce a novel signal from long-range self-interactions between neutrinos. In...
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Christopher Cappiello13/05/2024, 14:15Dark Matter
Cosmic ray (CR) upscattering of dark matter is one of the most straightforward mechanisms to accelerate ambient dark matter, making it detectable at high threshold, large volume experiments. In this work, we revisit CR upscattered dark matter signals at the IceCube detector, considering both proton and electron scattering, in the former case including both quasielastic and deep inelastic...
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Claire Savard (University of Colorado Boulder (US))13/05/2024, 14:15Dark Matter
A search for ``emerging jets'' produced in proton-proton collisions at a center-of-mass energy of 13 TeV is performed using data collected by the CMS experiment corresponding to an integrated luminosity of 138 fb^-1. This search examines a hypothetical dark quantum chromodynamics (QCD) sector that couples to the standard model (SM) through a scalar mediator. The scalar mediator decays into an...
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Juhi Dutta13/05/2024, 14:15Other BSM
Supersymmetric models with low electroweak fine-tuning are more prevalent on the string landscape than fine-tuned models. We assume a fertile patch of landscape vacua containing the minimal supersymmetric standard model (MSSM) as a low-energy EFT. Such models are characterized by light higgsinos in the mass range of a few hundred GeV whilst top squarks are in the 1-2.5 TeV range. Other...
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Zachary Orr (Colorado State University)13/05/2024, 14:30Dark Matter
We study the physics of the intermediate scattering regime for boosted dark matter (BDM) interacting with standard model (SM) target nucleons. The phenomenon of BDM, which is consistent with many possible DM models, occurs when DM particles receive a Lorentz boost from some process. BDM would then exhibit similar behavior to neutrinos as it potentially interacts, at relativistic speeds, in...
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Alice Bean (The University of Kansas (US))13/05/2024, 14:30Other BSM
Supersymmetry is an appealing theoretical extension of the Standard Model because this framework presents a viable dark matter candidate. Several CMS analyses have searched for evidence of supersymmetry at the electroweak scale in the compressed region, where the parent sparticle mass is close to that of the child, leading to soft Standard Model decay products that can be difficult to...
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Rodolfo Capdevilla (Fermi National Accelerator Laboratory)13/05/2024, 14:30Dark Matter
Minimal Dark Matter models extend the Standard Model by incorporating a single electroweak multiplet, with its neutral component serving as a candidate for the thermal relic dark matter in the Universe. These models predict TeV-scale particles with sub-GeV mass splittings $\Delta$. Collider searches aim at producing the charged member of the electroweak multiplet which then decays into dark...
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Nabin Bhatta (Virginia Tech)13/05/2024, 14:30Neutrino Physics
The talk will still be about the same generalization of QM but more focused on the difference in the interference pattern of two paths in canonical QM vs. this generalization of QM. The reason for this change is that I have made much more progress in this aspect than the topic of my current abstract. As such, I believe it would be more fruitful to talk about this work as opposed to...
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David Hertzog (University of Washington)13/05/2024, 14:30Instrumentation
LYSO crystals are radiation-hard, non-hygroscopic, have a light yield of $\sim30,000\,\gamma$/MeV, a 40-ns decay time, and a radiation length of just 1.14 cm. Conventional photosensors work naturally at the LYSO peak wavelength of 420 nm. These properties suggest that an electromagnetic calorimeter made from LYSO should be ideal for high-rate, low-energy precision experiments where high...
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Ranit Das (Rutgers University)13/05/2024, 14:30Machine Learning & AI
We present R-Anode, a new method for data-driven, model-agnostic resonant anomaly detection that raises the bar for both performance and interpretability. The key to R-Anode is to enhance the inductive bias of the anomaly detection task by fitting a normalizing flow directly to the small and unknown signal component, while holding fixed a background model (also a normalizing flow) learned from...
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Michael Mackenzie (Northwestern University (US))13/05/2024, 14:30
Neutrino oscillations have shown that lepton flavor is not a conserved quantity. Charged lepton flavor violation (CLFV) is suppressed by the small neutrino masses well below what is experimentally observable, while lepton number violation (LNV) is forbidden in the SM extended to include neutrino masses. New physics models predict higher rates of CLFV and allow for LNV. The CLFV $\mu^-...
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Neal Avis Kozar13/05/2024, 14:45Dark Matter
We perform a global fit of dark matter interactions with nucleons using a non-relativistic effective operator description, considering both direct detection and neutrino data. We examine the impact of combining the direct detection experiments CDMSlite, CRESST-II, CRESST-III, DarkSide-50, LUX, LZ, PandaX-II, PandaX-4T, PICO-60, SIMPLE, SuperCDMS, XENON100, and XENON1T along with neutrino data...
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Swagato Banerjee (University of Louisville (US))13/05/2024, 14:45
Charged lepton flavor violation is an unambiguous signature of New Physics. Current experimental status and future prospects from the electron-positron colliders are discussed. Discovery potential of New Physics models with charged lepton flavor violation as its experimental signature are also presented.
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Dr Subhajit Ghosh (The University of Texas at Austin)13/05/2024, 14:45Cosmology & Dark Energy
In this talk, we discuss the cosmological effects of a tower of neutrino states (equivalently a tower of warm dark matter ) on cosmic microwave background (CMB) and large-scale structure. For concreteness, we considered the $N$-Naturalness model which is a proposed mechanism to solve the electroweak Hierarchy problem. The model predicts a tower of neutrino states, which act as warm dark...
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Hancheng Li (University Of California, Santa Barbara)13/05/2024, 14:45Machine Learning & AI
Anomaly detection is a promising, model-agnostic strategy to find physics beyond the Standard Model. State-of-the-art machine learning methods offer impressive performance on anomaly detection tasks, but interpretability, resource, and memory concerns motivate considering a wide range of alternatives. We explore using the 2-Wasserstein distance from optimal transport theory, both as an anomaly...
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Sagar Airen13/05/2024, 14:45Dark Matter
Dark portals like the gauge, higgs, and neutrino portals are well-motivated extensions of the standard model (SM). These portals may lead to interactions between dark matter and the SM. In some scenarios, the mediator predominantly decays invisibly, making it challenging to constrain them. The prospect of a future muon collider has triggered a growing interest in the particle physics...
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Daniel Crowe13/05/2024, 14:45Instrumentation
We present a calculation of QED radiative corrections to low energy electron proton scattering at next-to-leading order. This work is based on that performed previously by Maximon and Tjon which relied on the soft photon approximation for the two-photon exchange diagram. The calculations are performed assuming the finite size of the proton through electromagnetic dipole form factors and...
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Bobby McGovern (University of Pennsylvania (US))13/05/2024, 14:45Other BSM
A search is presented for the pair-production of charginos and the production of a chargino and neutralino in a supersymmetric model where the near mass-degenerate chargino and neutralino each decay via $R$-parity-violating couplings to a Higgs boson and a charged lepton or neutrino. This analysis searches for a Higgs-lepton resonance in data corresponding to an integrated luminosity of 139...
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13/05/2024, 15:00
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13/05/2024, 15:00
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Lauren Melissa Osojnak (University of Pennsylvania (US))13/05/2024, 15:00Other BSM
A search is presented for the direct pair production of scalar tops, which each decay through an $R$-parity violating coupling to a charged lepton and a $b$-quark. The final state has two resonances formed by the lepton-jet pairs. Expected sensitivity will be shown for the dataset consisting of an integrated luminosity of 140 $fb^{-1}$ of proton-proton collisions at a center-of-mass energy of...
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Radha Mastandrea (LBNL)13/05/2024, 15:00Machine Learning & AI
Understanding the higgs boson, both in the context of Standard Model physics and beyond-the-Standard Model hypotheses, is a key problem in modern particle physics. An increased understanding could come from the detection and analysis of pairs of higgs bosons produced at hadron colliders. While such higgs pairs have not yet been observed at the Large Hadron Collider (LHC), it is likely that...
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Anupam Ray13/05/2024, 15:00Dark Matter
A sub-component of dark matter with a short collision length compared to a planetary size leads to efficient accumulation of dark matter in astrophysical bodies. Such particles represent an interesting physics target since they can evade existing bounds from direct detection due to their rapid thermalization in high-density environments. In this talk, I will demonstrate that terrestrial...
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379. Pair Production and Hadron Photoproduction Backgrounds at Cool Copper Collider (C3) acceleratorAbdollah Mohammadi (University of Wisconsin Madison (US))13/05/2024, 15:00Accelerators
Electron-positron pair production and hadron photoproduction are the most important beam-induced backgrounds at linear electron-positron colliders. Predicting them accurately governs the design and
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optimization of detectors at these machines, and ultimately their physics reach. With the proposal, adoption, and first specification of the C3 collider concept it is of primary importance to... -
Yousen Zhang (Brookhaven National Laboratory)13/05/2024, 15:00
Lepton flavor universality (LFU) is an assumed symmetry in the Standard Model (SM). The violation of the lepton flavor universality (LFUV) would be a clear sign of physics beyond the Standard Model and has been actively searched from both small- and large-scale experiments. One of the most stringent tests for LFU comes from the precision measurements of rare decays of light mesons. In...
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13/05/2024, 15:15
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13/05/2024, 15:15
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Kevin Langhoff (UC Berkeley)13/05/2024, 15:15
We show how the experiment Mu3e can improve sensitivity to light new physics by taking advantage of the angular distribution of the decay products. We also propose a new search at Mu3e for flavor violating axions through the decay mu ->3e + a which circumvents the calibration challenges which plague the mu -> e a.
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Shashin Pavaskar13/05/2024, 15:15Dark Matter
We propose anti-ferromagnets as optimal targets to hunt for sub-MeV dark matter with spin-dependent interactions. These materials allow for multi-magnon emission even for very small momentum transfers, and are therefore sensitive to dark matter particles as light as the keV. We use an effective theory to compute the event rates in a simple way. Among the materials studied here, we identify...
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Umar Sohail Qureshi (Vanderbilt University)13/05/2024, 15:15Machine Learning & AI
A model based on a $U(1)_{T 3R}$ extension of the Standard Model can address the mass hierarchy between the third and the first two generations of fermions, explain thermal dark matter abundance, and the muon $g - 2$ and $R_{K^{(*)}}$ anomalies. The model contains a light scalar boson $\phi'$ and a heavy vector-like quark $\chi_u$ that can be probed at CERN's Large Hadron Collider (LHC). We...
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KAIRUI ZHANG (University of Wisconsin-Madison)13/05/2024, 15:15Other BSM
In natural supersymmetric models defined by no worse than a part in
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thirty electroweak fine-tuning, winos and binos are generically expected
to be much heavier than higgsinos. Moreover, the splitting between the
higgsinos is expected to be small, so that the visible decay products of
the heavier higgsinos are soft, rendering the higgsinos quasi-invisible
at the LHC. Within the natural... -
Kaladi Babu13/05/2024, 16:00Axion
The Peccei-Quinn (PQ) symmetry that solves the strong CP problem, being a global symmetry, suffers from a potential quality problem in that the symmetry is not respected by quantum gravity. In this talk I will present results from an ongoing work (with B. Dutta and R.N. Mohapatra) where we address successfully this problem based on a gauged U(1) symmetry. The PQ symmetry arises accidentally...
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Prasanth Shyamsundar (Fermi National Accelerator Laboratory)13/05/2024, 16:00Computing, Analysis Tools and Data Handling
In this talk, I will introduce ARCANE reweighting, a new Monte Carlo technique to solve the negative weights problem in collider event generation. We will see a demonstration of the technique in the generation of $(e^+ e^- \longrightarrow q\bar{q} + 1~\mathrm{jet})$ events under the MC@NLO formalism.
In this scenario, ARCANE can reduce the fraction of negative weights by redistributing the...
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Dr Alberto Tonero (Kennesaw State University)13/05/2024, 16:00Other BSM
We present theoretical results at approximate NNLO in QCD for top-quark pair-production total cross sections and top-quark differential distributions at the LHC in the SMEFT. These approximate results are obtained by adding higher-order soft gluon corrections to the complete NLO calculations. The higher-order corrections are large, and they reduce the scale uncertainties. These improved...
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Patrick Huber13/05/2024, 16:00
The discovery of neutrino oscillation has ushered in a number of questions: Why are neutrino masses small? Are they different from other fermion masses? Are neutrinos the solution to the baryon asymmetry ? Are there really only 3 neutrinos? Is there a relation between neutrino and quark mixing? and many more. In order to get to bottom of these questions a massive experimental program in...
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Ian Lewis (The University of Kansas)13/05/2024, 16:00Electroweak & Higgs Physics
We develop benchmarks for resonant di-scalar production in the generic
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complex singlet scalar extension of the Standard Model (SM), which contains two new scalars. These benchmarks maximize di-scalar resonant production: $pp\rightarrow h_2 \rightarrow h_1 h_1/h_1h_3/h_3h_3$, where $h_1$ is the observed SM-like Higgs boson and $h_{2,3}$ are new scalars. The decays $h_2\rightarrow h_1h_3$ and... -
Prof. Paul Karchin (Wayne State University (US))13/05/2024, 16:00Dark Matter
The possibility of a dark sector photon that couples to standard model lepton pairs has received much theoretical interest. Dark photons with GeV scale masses could have decays with substantial branching fractions to simple decay modes such as opposite-sign muon pairs. If the dark photon originates from a heavy particle, for example a BSM Higgs, the dark photon is boosted in the lab frame (CMS...
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Matthew Szydagis13/05/2024, 16:00Dark Matter
The mystery of dark matter is one of the greatest puzzles in modern science. What is 85% of the matter, or 25% of the mass/energy, of the universe made up of? No human knows for certain. Despite mountains of evidence from astrophysics and cosmology, direct laboratory detection eludes physicists. A leading candidate to explain dark matter is the WIMP or Weakly Interacting Massive Particle, a...
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Eric Reinhardt (University of Alabama (US))13/05/2024, 16:15Computing, Analysis Tools and Data Handling
The Large Hadron Collider was developed, in part, to produce and study heavy particles such as the top quark. The lifetime of the top quark is on the order of less than $10^{-24}$ seconds. Due to its short lifetime, the top quark is observed indirectly by particle detectors through the particles it decays into. A key part of reconstructing heavy particles for observation is to properly assign...
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dorival Gonçalves (Oklahoma State University)13/05/2024, 16:15Electroweak & Higgs Physics
The knowledge of the Higgs potential is crucial for understanding the origin of mass and the thermal history of our Universe. We show how collider measurements and observations of stochastic gravitational wave signals can complement each other to explore the multiform scalar potential in the two Higgs doublet model. In our investigation, we analyze critical elements of the Higgs potential to...
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Christopher Verhaaren (Brigham Young University)13/05/2024, 16:15Axion
A heavy axion avoids the quality problem and has been shown to produce interesting experimental signatures. A mirror sector has been invoked to explain how such axions can occur, often with a large hierarchy between the visible and mirror Higgs masses. I discuss a novel realization of the Twin Higgs framework that produces a heavy axion without this large hierarchy, addressing both the strong...
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Prudhvi Bhattiprolu (University of Michigan)13/05/2024, 16:15Other BSM
We study the implications of precise gauge coupling unification on supersymmetric particle masses. We argue that precise unification favors the superpartner masses that are in the range of several TeV and well beyond. We demonstrate this in the minimal supersymmetric theory with a common sparticle mass threshold, and two simple high-scale scenarios: minimal supergravity and minimal...
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Erdem Yigit Ertorer (Carnegie-Mellon University (US))13/05/2024, 16:15Dark Matter
A search for dark matter (DM) produced in association with a resonant b$\bar{b}$ pair is performed in proton-proton collisions at a center-of-mass energy of 13 TeV collected with the CMS detector during the Run 2 of the Large Hadron Colllider. The analyzed data sample corresponds to an integrated luminosity of 137 fb$^{-1}$.
Results are interpreted in terms of a novel theoretical model of...
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Pablo Kunze (Gran Sasso Science Institute)13/05/2024, 16:15Dark Matter
Dark matter, estimated to be 85% of the total mass of the Universe, remains a mystery in physics. Despite accumulating evidence supporting its existence, the true nature of dark matter is still elusive. One of the candidate's hypothesis are the Weakly Interacting Massive Particles (WIMPs). The search for WIMPs represents a real experimental challenge, has been running for more than a decade...
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Wei Shi (Stony Brook University (US))13/05/2024, 16:22
The Deep Underground Neutrino Experiment (DUNE) is a next-generation long-baseline neutrino oscillation experiment in the US. It will have four far detector modules, each holding 17 kilotons of liquid argon. These modules sit 1500 meters underground and 1300 kilometers from the near detector complex. In this overview talk, I will give an overview of DUNE experiment, including the status of...
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Arpon Paul13/05/2024, 16:30Axion
We identify the QCD axion and right-handed (sterile) neutrinos as bound states of an SU(5) chiral gauge theory with Peccei-Quinn (PQ) symmetry arising as a global symmetry of the strong dynamics. The strong dynamics is assumed to spontaneously break the PQ symmetry, producing a high-quality axion and naturally generating Majorana masses for the right-handed neutrinos at the PQ scale. The...
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Dr Carlos Henrique de Lima (TRIUMF)13/05/2024, 16:30Electroweak & Higgs Physics
We study the conditions under which the CP violation in the quark mixing matrix can leak into the scalar potential of the real two-Higgs-doublet model (2HDM) via divergent radiative corrections, thereby spoiling the renormalizability of the model. We show that any contributing diagram must involve 12 Yukawa-coupling insertions and a factor of the hard $U(1)_{PQ}$-breaking scalar potential...
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Subhojit Roy (Argonne National Laboratory)13/05/2024, 16:30Dark Matter
We unveil blind spot regions in dark matter (DM) direct detection (DMDD), for weakly interacting massive particles with a mass around a few hundred~GeV that may reveal interesting photon signals at the LHC. We explore a scenario where the DM primarily originates from the singlet sector within the $Z_3$-symmetric Next-to-Minimal Supersymmetric Standard Model (NMSSM). A novel DMDD...
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Jay Desai (Stony Brook University)13/05/2024, 16:30Other BSM
We present the basis of dimension-eight operators associated to
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universal theories. We first derive a complete list of independent
dimension-eight operators formed with the Standard Model bosonic
fields characteristic of such universal new physics
scenarios. Without imposing C nor P the basis contains 175 operators
- this is, the assumption of Universality reduces the number of... -
Jacob Scott13/05/2024, 16:30Computing, Analysis Tools and Data Handling
One key problem in collider physics is that of binary classification to fully reconstruct final states. Considering top quark pair production in the fully hadronic channel as an example, we explore the effectiveness of multiple variational quantum algorithms (VQAs) including quantum approximation optimization algorithm (QAOA) and its derivatives. Compared against other approaches, such as...
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Megan McDuffie (Stony Brook University)13/05/2024, 16:30Dark Matter
We have further developed the dark matter (DM) Migdal effect within semiconductors beyond the standard spin independent interaction. Ten additional non-relativistic operators are examined which motivate five unique nuclear responses within the crystal. We derive the generalized effective DM-lattice Migdal Hamiltonian and present new limits for the full list of interactions.
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PUJA DAS13/05/2024, 16:45Dark Matter
In the context of a U(1)$_X$ extension of the Standard Model (SM), we consider a (super)heavy Dirac fermion dark matter (DM) which interacts with the SM sector through U(1)$_X$ gauge interaction with a sizable gauge coupling. Although its mass exceeds the unitarity bound for the thermal DM scenario, its observed relic density is reproduced through incomplete thermalization with the reheating...
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Prof. Jianming Bian (University of California Irvine (US))13/05/2024, 16:45
DUNE is the flagship of the next generation of neutrino experiments in the United States. It is designed to decisively measure neutrino CP violation and the mass hierarchy. It utilizes the Liquid Argon Time Projection Chamber (LArTPC) technology, which provides exceptional spatial resolution and the potential to accurately identify final state particles and neutrino events. DUNE's high...
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Huangyu Xiao (Fermilab)13/05/2024, 16:45Axion
The axion or axion like particle (ALP), as a leading dark matter candidate, is the target of many on-going and proposed experimental searches based on its coupling to photons. However, indirect searches for axions have not been as competitive as direct searches that can probe a large range of parameter space. In this talk, I will introduce the idea that axion stars will inevitably form in the...
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Si Wang13/05/2024, 16:45Other BSM
We are investigating the effects of dimension 6 dipole moment operators on dipole
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moment measurements, which are electric dipole moment (EDM) and magnetic dipole moment (MDM). -
Santiago Cane (University of Pittsburgh (US))13/05/2024, 16:45Computing, Analysis Tools and Data Handling
The Large Hadron Collider (LHC) will undergo a major improvement from 2026-2028 called High Luminosity LHC (HL-LHC). The number of collisions per proton bunch crossing will increase from ~60 to ~200. This will stress the current event selection (trigger) system, and the efficiency of specialized jet triggers in particular. An important challenge lies in classifying jets coming from a single...
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Dr Akanksha Bhardwaj (Oklahoma State University)13/05/2024, 16:45Electroweak & Higgs Physics
Exploring additional CP violation sources at the Large Hadron Collider (LHC) is vital to the Higgs physics programme beyond the Standard Model. An unexplored avenue at the LHC is a significant non-linear realization of CP violation, naturally described in non-linear Higgs Effective Field Theory (HEFT). In this talk, we will discuss constraining such interactions across a broad spectrum of...
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Matt Joyce (Ohio State University (US))13/05/2024, 16:45Dark Matter
We will present the operational status of the LHC Run 3 milliQan detector un, whose installation began last year and was completed during the 2023-4 YETS, and is being commissioned at the time of submission. We will also show any available initial results from data obtained with Run 3 LHC Collisions.
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Xu-Xiang Li (University of Utah)13/05/2024, 17:00Electroweak & Higgs Physics
Field space geometry has been fruitful in understanding many aspects of EFT, including basis-independent criteria for distinguishing HEFT vs. SMEFT, reorganization of scattering amplitudes in covariant form, derivation of renormalization group equations and geometric soft theorem. We incorporate field space geometry in functional matching by dividing the field space into light and heavy...
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Brandi Nicole Skipworth (University of Tennessee (US))13/05/2024, 17:00Computing, Analysis Tools and Data Handling
The CMS detector will upgrade its tracking detector in preparation for the High Luminosity Large Hadron Collider (HL-LHC). The Phase-2 outer tracker layout will consist of 6 barrel layers in the center and 5 endcap layers. These will be composed of two different types of double-sensor modules, capable of reading out hits compatible with charged particles with transverse momentum above 2 GeV...
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Yujin Park13/05/2024, 17:00Axion
Proto-neutron stars, formed in the center of Type-II supernovae, represent promising science targets for probing axions. The hypothetical particles are emitted via e.g. the Primakoff process and can modify the cooling rate of the proto-neutron stars and also convert to observable gamma rays while propagating through astrophysical magnetic field. Observations of Supernova 1987 (SN 1987A) from...
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Bethany Suter (UC Berkeley)13/05/2024, 17:00Dark Matter
As nuclear recoil direct detection experiments carve out more and more dark matter parameter space in the WIMP mass range, the need for searches probing lower masses has become evident. Since lower dark matter masses lead to smaller momentum transfers, we can look to the low momentum limit of nuclear recoils: phonon excitations in crystals. Single phonon experiments promise to eventually probe...
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Shuaixiang (Shu) Zhang (Indiana University (US))13/05/2024, 17:00
I will introduce the general concepts of DUNE (Deep Underground Neutrino Experiment), as well as the current status of protoDUNE-VD, one of the two large-scale LArTPC-based DUNE Far Detector prototypes located at CERN. Later, I will focus on my neural network module, aiming at speeding up photon propagation process for optical simulation of protoDUNE-VD. This module is 50 ~ 100 times faster...
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Ansh Sameer Desai (University of Oregon (US))13/05/2024, 17:00Dark Matter
FASER, the ForwArd Search ExpeRiment, has successfully taken data at the LHC since the start of Run 3 in 2022. From its unique location along the beam collision axis 480 m from the ATLAS IP, FASER has set leading bounds on dark photon parameter space in the thermal target region and has world-leading sensitivity to many other models of long-lived particles. In this talk, we will give a full...
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Diana Sokhashvili13/05/2024, 17:00Other BSM
Baryon number violation is our most sensitive probe of physics beyond the Standard Model. Its realization through heavy new particles can be conveniently encoded in higher-dimensional operators that allow for a model-agnostic analysis. The unparalleled sensitivity of nuclear decays to baryon number violation makes it possible to probe effective operators of very high mass dimension, far beyond...
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13/05/2024, 17:15Computing, Analysis Tools and Data Handling
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13/05/2024, 17:15
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Roland Allen13/05/2024, 17:15Other BSM
As in arXiv:2307.04255, we consider a radically modified form of supersymmetry (called susy here to avoid confusion), which initially combines standard Weyl fermion fields and primitive (unphysical) boson fields. A stable vacuum then requires that the initial boson fields, whose excitations would have negative energy, be transformed into three kinds of scalar-boson fields: the usual complex...
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Orion Ning (University of California, Berkeley)13/05/2024, 17:15Axion
Ultra-light axions with weak couplings to photons are motivated extensions of the Standard Model. We perform one of the most sensitive searches to-date for the existence of these particles with the NuSTAR telescope by searching for axion production in stars in the M82 starburst galaxy and the M87 central galaxy of the Virgo cluster. This involves a sum over the full stellar populations in...
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Sean Benevedes (Massachusetts Institute of Technology)13/05/2024, 17:15Electroweak & Higgs Physics
We explore the connection between the Higgs hierarchy problem and the metastability of the electroweak vacuum. Previous work has shown that metastability bounds the magnitude of the Higgs mass squared parameter in the $m_H^2 < 0$ case, realized in our universe. We argue for the first time that metastability also bounds the Higgs mass in the counterfactual $m_H^2 > 0$ case; that is,...
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Jessica Pascadlo (University of Virginia)13/05/2024, 17:15Dark Matter
The constituents of dark matter are still unknown, and the viable possibilities span a very large mass range. Specific scenarios for the origin of dark matter sharpen the focus on a narrower range of masses: the natural scenario where dark matter originates from thermal contact with familiar matter in the early Universe requires the DM mass to lie within about an MeV to 100 TeV. Considerable...
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Matthew Gar Jun Man (University of Toronto (CA))13/05/2024, 17:15
The Deep Underground Neutrino Experiment (DUNE) is one of two big next generation neutrino experiments aimed at measuring neutrino properties, including the mass hierarchy, CP violating phase. The DUNE Far Detector will consist of four 17-kt modules, two of which have been prototypes at the ProtoDUNE experiment at CERN. The ProtoDUNE experiment consists of two liquid argon time projection...
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Vladimir Shiltsev14/05/2024, 08:30
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Laura Reina (Florida State University (US))14/05/2024, 09:00
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Kathryn Mary Zurek (University of California Berkeley (US))14/05/2024, 09:30
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elke-caroline Aschenauer14/05/2024, 10:00
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Jesse Thaler (MIT)14/05/2024, 11:00
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Christian Walter Bauer (Lawrence Berkeley National Lab. (US))14/05/2024, 11:30
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Saptaparna Bhattacharya (Wayne State University (US))14/05/2024, 12:30
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Midhat Farooq14/05/2024, 13:15
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Stefano Anselmi (University of Padua, Department of Physics and Astronomy - INFN, Sezione di Padova)14/05/2024, 14:00Cosmology & Dark Energy
Baryon Acoustic Oscillations are considered one of the most powerful cosmological probes. They are assumed to provide distance measures independent of a specific cosmological model. At the same time the obtained distances are considered agnostic with respect to other cosmological observations. However, in current measurements, the inference is done assuming parameter values of a fiducial LCDM...
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Zhen Liu14/05/2024, 14:00Dark Matter
This study demonstrates how magnetically levitated (MagLeV) superconductors can detect dark-photon and axion dark matter via electromagnetic interactions, focusing on the underexplored low-frequency range below a kHz. Unlike traditional sensors that primarily detect inertial forces, Maglev systems are sensitive to electromagnetic forces, enabling them to respond to oscillating magnetic fields...
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Dr Jeffrey Hyde (Swarthmore College)14/05/2024, 14:00Neutrino Physics
Identification of high-energy neutrino point sources by IceCube is exciting for particle phenomenology, as propagation of neutrinos over large distances allows us to test properties that are hard to access. However, beyond-Standard Model effects would often show up as distortions of the energy spectrum, which makes it difficult to distinguish new physics from uncertainties in the source...
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Jacob Michael Calcutt (Oregon State University (US))14/05/2024, 14:00Neutrino Physics
ProtoDUNE-SP was a large-scale prototype of the single phase DUNE far detector which took test beam data in Fall 2018. The beam consisted of positive pions, kaons, muons, and protons, and this data is being used to measure the various hadron-Ar interaction cross sections. These measurements will provide important constraints for the nuclear ground state, final state interaction, and secondary...
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Qinrui Liu (Queen's University)14/05/2024, 14:00Dark Matter
The decay of asymmetric dark matter (ADM) leads to possible neutrino signatures with an asymmetry of neutrinos and antineutrinos. In the high-energy regime, the Glashow resonant interaction $\bar{\nu}_e+e^- \rightarrow W^-$ is the only way to differentiate the antineutrino contribution in the diffuse astrophysical high-energy neutrino flux experimentally, which provides a possibility to probe...
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Anthony Brady (University of Southern California)14/05/2024, 14:00
Quantum sensing employs a rich arsenal of techniques, such as squeezing, photon counting, and entanglement assistance, to achieve unprecedented levels of sensitivity in various tasks, with wide-reaching applications in fields of fundamental physics. For instance, squeezing has been utilized to enhance the sensitivity of gravitational wave detection and expedite the hunt for exotic dark matter...
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Enzo Daniele Brandani (University of Pittsburgh (US))14/05/2024, 14:00Electroweak & Higgs Physics
Beyond the Standard Model (BSM) Higgs with a same-flavor, opposite-charge dilepton plus Missing Transverse Energy (MET) final state are predicted by many models, including extensions of supersymmetry with an additional scalar. Such models are motivated by phenomenological issues with the Standard Model, such as the hierarchy problem, and by astrophysical observations such as the excess of...
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Steven Clark (Rutgers State Univ. of New Jersey (US))14/05/2024, 14:00Other BSM
A search for a massive resonance $X$ decaying to a pair of spin-0 bosons $\phi$ that themselves decay to pairs of photons ($\gamma$), is presented. The search is based on CERN LHC proton-proton collision data at $\sqrt{s} = 13$ TeV, collected with the CMS detector, corresponding to an integrated luminosity of 138 $\textrm{fb}^{-1}$. The analysis considers masses $m_X$ between 0.3 and 3 TeV,...
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George Wei-Shu Hou (National Taiwan University (TW))14/05/2024, 14:00Quark and Lepton Flavor Physics
Since the landmark discovery in 2012 of the h(125) Higgs boson at the LHC, it should be a nobrainer to pursue the existence of a second Higgs doublet. We advocate, however, the general 2HDM
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(g2HDM) that possesses a second set of Yukawa couplings. The extra top Yukawa coupling ρtt drives
electroweak baryogenesis (EWBG), i.e. generating Baryon Asymmetry of the Universe (B.A.U.) with... -
Wen Han Chiu (UIUC)14/05/2024, 14:00Machine Learning & AI
We present work in progress on using the timing information of jet constituents to determine the production vertex of highly displaced jets formed from the decay of a long-lived particle. We also demonstrate that the same network can output a much more consistent jet time that is less sensitive to geometric effects; allowing for better exclusionary power compared to $p_T$-weighted time.
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14/05/2024, 14:15
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Julian Heeck14/05/2024, 14:15Quark and Lepton Flavor Physics
Baryon number violation is our most sensitive probe of physics beyond the Standard Model, especially through the study of nucleon decays. Angular momentum conservation requires a lepton in the final state of such decays, kinematically restricted to electrons, muons, or neutrinos. We show that operators involving tauons, which are at first sight too heavy to play a role in nucleon decays, still...
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Jeffrey Davis (Johns Hopkins University (US))14/05/2024, 14:15Electroweak & Higgs Physics
We present a search for the y+H production mode with data from the CMS experiment at the LHC using 138fb$^{-1}$ of data with sqrt(s) = 13TeV. In this analysis we target a signature of a boosted Higgs boson recoiling against a high energy photon for H->4l and H->bb final states. Effective HZγ and Hγγ anomalous couplings are considered in this work within the framework of Effective Field Theory....
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Bei Zhou (Fermilab)14/05/2024, 14:15Neutrino Physics
Charged leptons produced by high-energy and ultrahigh-energy neutrinos have a substantial probability of emitting prompt internal bremsstrahlung $\nu_\ell + N \rightarrow \ell + X + \gamma$. This can have important consequences for neutrino detection. We discuss observable consequences at high- and ultrahigh-energy neutrino telescopes and LHC's Forward Physics Facility. Logarithmic...
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Lu Ren (University of Colorado Boulder (US))14/05/2024, 14:15Neutrino Physics
The SPS Heavy Ion and Neutrino Experiment (NA61/SHINE) is a fixed-target hadron spectrometer at CERN’s Super Proton Synchrotron. It has a dedicated program to measure hadron-nucleus interactions with the goal of constraining the accelerator-based neutrino flux, which mainly originates from the not precisely known primary and secondary hadron production. NA61/SHINE’s previous measurements of...
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Lillian Luo14/05/2024, 14:15Dark Matter
We study the cosmological phase transition in the Conformal Freeze-In (COFI) dark matter model. The dark sector is a 4D conformal field theory (CFT) at high energy scales, but its conformal symmetry is broken in the IR through a small coupling of a relevant CFT operator $\mathcal{O}_\mathrm{CFT}$ to a Standard Model (SM) portal operator. The dark sector confines below a gap scale...
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Luca Lavezzo (MIT)14/05/2024, 14:15Other BSM
We present the first search for "soft unclustered energy patterns" (SUEPs) described by an isotropic production of many soft particles. SUEPs are a potential signature of some Hidden Valley models invoked to explain dark matter, and which can be produced at the LHC via a heavy scalar mediator. It was previously expected that such events would be rejected by conventional collider triggers and...
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Ahmed Youssef (University of Cincinnati)14/05/2024, 14:15Machine Learning & AI
Hadronization, a crucial component of event generation, is traditionally simulated using finely-tuned empirical models. While current phenomenological models have achieved significant success in simulating this process, there remain areas where they fall short of accurately describing the underlying physics. An alternative approach is machine learning-based models.
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In this talk, I will... -
14/05/2024, 14:30
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Mr Ian D. Kotler FRAS for the DUNE Collaboration (Drexel University)14/05/2024, 14:30Neutrino Physics
The Deep Underground Neutrino Experiment (DUNE) is a long baseline oscillation experiment that, among its many physics goals, seeks to measure the charge-parity (CP) violating phase, $\delta_{\mathrm{CP}}$. To do so requires precise knowledge of both the neutrino and antineutrino fluxes. DUNE will achieve this via the use of both a near and far detection system. The leading source of...
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Micah Mellors14/05/2024, 14:30Quark and Lepton Flavor Physics
The fermion mass hierarchy of the Standard Model (SM) spans many orders of magnitude and begs for a further explanation. The Froggatt-Nielsen (FN) mechanism is a popular solution which introduces an additional $U(1)$ symmetry to the SM under which SM fermions are charged. We studied the general class of FN solutions to the lepton flavor puzzle, including multiple different scenarios of...
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Riku Mizuta (TRIUMF / University of British Columbia)14/05/2024, 14:30Dark Matter
Dark glueballs, bound states of dark gluons in a $SU(N)$ dark sector (DS), have been considered as a dark matter (DM) candidate. We study a scenario where the DS consists only of dark gluons and dominates the Universe after primordial inflation. As the Universe expands and cools down, dark gluons get confined to a set of dark glueball states; they undergo freeze-out, leaving the Universe...
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Tanay Roy (Associate Scientist)14/05/2024, 14:30
Superconducting transmon qubits play a pivotal role in contemporary superconducting quantum computing systems. These nonlinear devices are typically composed of a Josephson junction shunted by a large capacitor and the bottom two energy eigenstates serve as qubits. When a qubit is placed in its excited state, it decays to its ground state with a relaxation timescale $T_1$. However, recent...
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Adam Albert Kobert (Rutgers State Univ. of New Jersey (US))14/05/2024, 14:30Other BSM
We present a search for low-mass narrow quark-antiquark resonances. This search uses data from the LHC in proton-proton collisions at a center-of-mass energy of 13 TeV, collected by the CMS detector in Run 2, and corresponds to an integrated luminosity of 136 fb^-1. The analysis strategy makes use of an initial state photon recoiling against the narrow resonance. The resulting large transverse...
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Austin Edwin Townsend (University of Notre Dame (US))14/05/2024, 14:30Machine Learning & AI
New physics at the LHC may be hiding in non-standard final state configurations, particularly in cases where stringent particle identification could obscure the signal. Here we present a search for resonances in the three-photon final state where two photons are highly merged. We target the case where a heavy vector-like particle decays to a photon and a new spin-0 particle $\phi$, where...
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Natalia Tapia Arellano (University of Utah)14/05/2024, 14:30Neutrino Physics
We use publicly available data to perform a search for correlations of high-energy neutrino candidate events detected by IceCube and high-energy photons seen by the HAWC collaboration. Our search is focused on unveiling such correlations outside of the Galactic plane. This search is sensitive to correlations in the neutrino candidate and photon skymaps which would arise from a population of...
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Trevor Russell (Brown University (US))14/05/2024, 14:30Electroweak & Higgs Physics
The Standard Model (SM) predicts couplings to the Higgs boson for a given mass of the Higgs boson, and experimental values different from these predictions would be strong indicators of physics beyond the SM. While Higgs decays to vector bosons and third-generation charged fermions have been established with good agreement to SM couplings, the Higgs boson coupling to charm quarks has yet to be...
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14/05/2024, 14:45
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Sabrina Hanning14/05/2024, 14:45Neutrino Physics
The scenario of neutrino self-interactions is an interesting beyond-Standard Model possibility that is difficult to test. High energy neutrinos measured by the IceCube neutrino detector having traveled long distances present an opportunity to attempt to constrain the parameters governing neutrino self-interaction: the mediator mass and coupling constant. We have modeled neutrino production,...
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Dr Itamar Allali (Brown University)14/05/2024, 14:45Cosmology & Dark Energy
Models of cosmology including dark radiation (DR) have garnered recent interest, due in part to their versatility in modifying the $\Lambda$CDM concordance model in hopes of resolving observational tensions. Equally interesting is the capacity for DR models to be constrained or detected with current and near-term cosmological data. Finally, DR models have the potential to be embedded into...
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Steven Ferrante (Cornell University)14/05/2024, 14:45Dark Matter
We introduce a model of dark matter (DM) where the DM is a composite of a spontaneously broken conformal field theory. We find that if the DM relic abundance is determined by freeze-out of annihilations to dilatons, where the dilatons are heavier than the DM, then the model is compatible with theoretical and experimental constraints for DM masses in the 0.1-10 GeV range. The conformal phase...
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Mikheil Sokhashvili14/05/2024, 14:45Quark and Lepton Flavor Physics
Charged lepton flavor violation arises in the Standard Model Effective Field Theory at mass dimension six. The operators that induce neutrinoless muon and tauon decays are among the best constrained and are sensitive to new-physics scales up to 10^7 GeV. An entirely different class of lepton-flavor-violating operators violates lepton flavors by two units rather than one and does not lead to...
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Abhishek Banerjee (University of Maryland)14/05/2024, 14:45Dark Matter
We explore the possibility of probing (ultra)-light dark matter (DM) using Mössbauer spectroscopy technique. Due to the time-oscillating DM background, a small shift in the emitted photon energy is produced, which in turn can be tested by the absorption spectrum. As the DM induced effect (signal) depends on the distance between the Mössbauer emitter and the absorber, this allows us to probe DM...
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Sanjana Sekhar (Johns Hopkins University (US))14/05/2024, 14:45Other BSM
A search for Drell Yan production of leptoquarks is performed using proton-proton collision data collected at √s = 13 TeV using the full Run-2 dataset with the CMS detector at the LHC, CERN. The data corresponds to an integrated luminosity of approximately 137 fb−1. The search spans scalar and vector leptoquarks that couple up and down quarks to electrons and muons. Dielectron and dimuon final...
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Ian Pang14/05/2024, 14:45Machine Learning & AI
Normalizing flows have proven to be state-of-the-art for fast calorimeter simulation. With access to the likelihood, these flow-based fast calorimeter surrogate models can be used for other tasks such as unsupervised anomaly detection and incident energy regression without any additional training costs.
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Trevor Rylan Hart (California State University (US))14/05/2024, 14:45Electroweak & Higgs Physics
The Higgs boson gives masses to all massive particles in the Standard Model (SM) and plays a crucial role in the theory. Studying different production and decay modes of the Higgs at the Large Hadron Collider is essential. The Vector Boson Fusion (VBF) is the second-largest production mechanism of the Higgs. Higgs bosons have the largest probability of decaying into a pair of bottom quarks,...
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Saptarshi Chaudhuri (Princeton University)14/05/2024, 14:50
The QCD axion, originally motivated as a solution to the strong CP problem, is a compelling candidate for dark matter, and accordingly, the last decade has seen an explosion in new ideas to search for axions. Simultaneously, we have witnessed a revolution in quantum sensing and metrology, with the emergence of platforms enabling ever-greater measurement sensitivity. These platforms are now...
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Daniele Gaggero (SUNY Buffalo)14/05/2024, 15:00Electroweak & Higgs Physics
In this talk, we present the two-loop order $\mathcal{O}(\alpha\alpha_s)$ correction to the bottom quark on-shell wavefunction renormalization constant and we update the $\overline{MS}$-mass and the Yukawa coupling corrections at the same order, considering the full dependence on the top quark mass and on the bottom mass itself.
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Mitchell Weikert (Rutgers University)14/05/2024, 15:00Cosmology & Dark Energy
Cosmological first order phase transitions are typically associated with physics beyond the Standard Model, and thus of great theoretical and observational interest. Models of phase transitions where the energy is mostly converted to dark radiation can be constrained through limits on the dark radiation energy density (parameterized by $\Delta N_{\rm eff}$). However, the current constraint...
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Yawen Xiao14/05/2024, 15:00Dark Matter
Detecting axion and dark photon dark matter in the milli-eV mass range has been considered being a significant challenge due to its frequency being too high for high-Q cavity resonators and too low for single-photon detectors to register. I will present a method that overcomes this difficulty (based on recent work arXiv:2208.06519) by using trapped electrons as high-Q resonators to detect...
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Ming-Shau Liu (University of Cambridge)14/05/2024, 15:00Quark and Lepton Flavor Physics
Non-abelian symmetries are strong contenders as solutions to the flavour puzzle that seeks to explain the mass and mixing matrices of SM fermions. The Universal Texture Zero (UTZ) model charges all quark and lepton families as triplets under the $\Delta(27)$ symmetry group, while simultaneously exploiting the seesaw mechanism to generate light neutrino masses. Together with BSM triplet...
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Thomas Gehrman (University of Oklahoma)14/05/2024, 15:00Dark Matter
We outline a new production mechanism for dark matter that we dub “recycling”:dark sector particles are kinematically trapped in the false vacuum during a dark phase transition; the false pockets collapse into primordial black holes (PBHs), which ultimately evaporate before Big Bang Nucleosynthesis (BBN) to reproduce the dark sector particles. The requirement that all PBHs evaporate prior to...
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Ali Garabaglu (University of Washington (US))14/05/2024, 15:00Neutrino Physics
The ForwArd Search ExpeRiment (FASER) has been successfully acquiring data at the Large Hadron Collider (LHC) since the inception of Run 3 in 2022. FASER opened the window on the new subfield of collider neutrino physics by conducting the first direct detection of muon and electron neutrinos at the LHC. In this talk, we discuss the latest neutrino physics results from FASER. A review of the...
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Petar Maksimovic (Johns Hopkins University (US))14/05/2024, 15:00Other BSM
Long-lived, charged particles are included in many beyond the standard model theories. It is possible to observe massive charged particles through unusual signatures within the CMS detector. We use data recorded during 2017-18 operations to search for signals involving anomalous ionization in the silicon tracker. Two new, enhanced methods are presented. The results are interpreted within...
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Kyle Angelo Granados (California State University (US))14/05/2024, 15:00Machine Learning & AI
The invariant mass of particle resonances is a key analysis variable for LHC physics. For analyses with di-tau final states, the direct calculation of the invariant mass is impossible because tau decays always include neutrinos, which escape detection in LHC detectors. The Missing Mass Calculator (MMC) is an algorithm used by the ATLAS Experiment to calculate the invariant mass of resonances...
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Jinghong Yang, Prof. Shabnam Jabeen (University of Maryland)14/05/2024, 15:10Quantum Information & Sensors
Recent advancements in quantum computing have introduced new opportunities alongside classical computing, offering unique capabilities that complement traditional methods. As quantum computers operate on fundamentally different principles from classical systems, there is a growing imperative to explore their distinct computational paradigms. In this context, our research aims to explore the...
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Thomas Gosart (University of Pennsylvania (US))14/05/2024, 15:15Electroweak & Higgs Physics
The Georgi-Machacek (GM) model is a motivated extension of the Standard Model (SM) that predicts the existence of singly and doubly charged Higgs bosons (denoted H± and H±±). Searches for these types of particles were conducted by the ATLAS collaboration at CERN with 139 fb$^{-1}$ of $\sqrt{s} = 13$ TeV $pp$ collision data (Run 2, collected between 2015 and 2018, see arXiv:2312.00420 and...
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Yufeng Du (California Institute of Technology)14/05/2024, 15:15Dark Matter
Atom interferometers and gradiometers have unique advantages in searching for various kinds of dark matter (DM). Our work focus on light DM scattering and gravitational effect from macroscopic DM in such experiments.
First we discuss sensitivities of atom interferometers to a light DM subcomponent at sub-GeV masses through decoherence and phase shift from spin-independent scatterings....
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Xucheng Gan14/05/2024, 15:15Cosmology & Dark Energy
We demonstrate that the searches for dark sector particles can provide probes of reheating scenarios, focusing on the cosmic millicharge background produced in the early universe. We discuss two types of millicharge particles (mCPs): either with, or without, an accompanying dark photon. These two types of mCPs have distinct theoretical motivations and cosmological signatures. We discuss...
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Kyungmin Park (Carnegie-Mellon University (US))14/05/2024, 15:15Machine Learning & AI
In a search for an exotic Higgs boson decay, a novel signature with highly collimated photons is studied where the Higgs boson decays into hypothetical light pseudoscalar particles of the form H to AA. In the highly boosted scenario, two collimated photons from the A decay are reconstructed as a single photon object, or an artificially merged photon shower. A deep learning based tagger is...
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Javier Fernández Acevedo (SLAC)14/05/2024, 15:15Dark Matter
White dwarfs have long been considered as large-scale dark matter (DM) detectors. Owing to their high density and relatively large size, these objects can capture large amounts of DM, potentially producing detectable signals. In this talk, I will show how we can probe for the first time the elusive higgsino, one of the remaining supersymmetric DM candidates that is largely unconstrained, using...
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Kiley Elizabeth Kennedy (Princeton University (US))14/05/2024, 15:15Other BSM
Long-lived particles (LLPs) arise in many promising theories beyond the Standard Model. At the LHC, LLPs typically decay away from their initial production vertex, producing displaced and possibly delayed final state objects that give rise to non-conventional detector signatures. The development of custom reconstruction algorithms and dedicated background estimation strategies significantly...
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Max Fieg (University of California Irvine (US))14/05/2024, 15:15Neutrino Physics
Proton-proton collisions at the LHC generate a high-intensity collimated beam of neutrinos in the forward direction, characterized by energies of up to several TeV. The recent observation of LHC neutrinos by FASERν and SND@LHC signals that this hitherto ignored particle beam is now available for scientific inquiry. Here we quantify the impact that neutrino deep-inelastic scattering (DIS)...
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Tony Menzo14/05/2024, 15:15Quark and Lepton Flavor Physics
I will discuss effective field theory tools and model building efforts focused on describing probeable signals of charged lepton flavor violation at current and future muon-to-electron conversion experiments.
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David Tucker-Smith (Williams College)14/05/2024, 16:00Other BSM
Models of freeze-in darkmatter (DM) can incorporate baryogenesis by a straightforward extension to two or more DM particles with different masses. We study a novel realization of freeze-in baryogenesis, in which a new SU(2)-doublet vector-like fermion (VLF) couples feebly to the SM Higgs and multiple fermionic DM mass eigenstates, leading to out-of-equilibrium DM production in the early...
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Nikolaos Kidonakis14/05/2024, 16:00Electroweak & Higgs Physics
We present calculations of higher-order QCD corrections for the production of a heavy charged-Higgs pair ($H^+ H^−$) in the two-Higgs-doublet model at LHC energies. We calculate the NNLO soft-plus-virtual QCD corrections and the N$^3$LO soft-gluon corrections to the total and differential cross sections in single-particle-inclusive kinematics.
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Luiz de Viveiros (Pennsylvania State University)14/05/2024, 16:00Neutrino Physics
Project 8 is an experiment that seeks to determine the electron-weighted neutrino mass via the precise measurement of the electron energy in beta decays, with a sensitivity goal of $40\,\mathrm{meV/c}^2$. We have developed a technique called Cyclotron Radiation Emission Spectroscopy (CRES), which allows single electron detection and characterization through the measurement of cyclotron...
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Prof. Fred Olness (Southern Methodist University (US))14/05/2024, 16:00QCD & Heavy Ion Physics
As we push to high precision measurements, the PDF uncertainty is often a limiting factor. To achieve improved precision, our goal is to not only ‘fit’ the PDFs, but to better understand the underlying process at the precision level. Toward this goal, we extend the QCD Parton Model analysis using a factorized nuclear structure model incorporating individual nucleons, and pairs of correlated...
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Sudhir Malik (University of Puerto Rico (US))14/05/2024, 16:00Outreach, Community Engagement & DEI
HEP experiments are operated by thousands of international collaborators and serve as big drivers of frontier science and human knowledge. They provide a fertile ground to train next generation of scientists. While we invest in science, it is equally imperative that we integrate in our scientific mission, opportunities for participation and contribution from underrepresented and marginalized...
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662. Understanding Non-perturbative Gauge Theories Using Anomaly Mediation of Supersymmetry BreakingHitoshi Murayama (University of California Berkeley (US))14/05/2024, 16:00Quantum Field & String Theory
Non-perturbative dynamics of gauge theories has been notoriously difficult to study. I discuss that supersymmetry slightly broken by anomaly mediation allows us to derive many features of dynamics. They include explicit demonstration of chiral symmetry breaking as well as monopole condensation, calculation of non-perturbative condensates, correct large $N_c$ behavior, and some of the low-lying spectra.
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Dr Zahra Tabrizi (Northwestern University)14/05/2024, 16:00Neutrino Physics
Neutrino physics is advancing into a precision era with the construction of new experiments, particularly in the few GeV energy range. Within this energy range, neutrinos exhibit diverse interactions with nucleons and nuclei. In this talk I will delve in particular into neutrino–nucleus quasi-elastic cross sections, taking into account both standard and, for the first time, non-standard...
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David Lindsay (None - Retired)14/05/2024, 16:00Cosmology & Dark Energy
The “Hubble tension” refers to a disagreement between the present expansion rate of the universe, and that projected by applying our current model (“Lambda Cold Dark Matter” or Lambda-CDM) to early universe measurements; Lambda-CDM yields an expansion rate substantially different from current measurement, by more than five standard deviations. We describe the model, in particular the meaning...
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Matthew Sullivan (Brookhaven National Laboratory)14/05/2024, 16:00Dark Matter
A larger Planck scale during an early epoch leads to a smaller Hubble rate, which is the measure for efficiency of primordial processes. The resulting slower cosmic tempo can accommodate alternative cosmological histories. We consider this possibility in the context of extra dimensional theories, which can provide a natural setting for the scenario. If the fundamental scale of the theory...
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Dr Neil Christensen (Illinois State University)14/05/2024, 16:15Quantum Field & String Theory
We find a complete set of 4-point vertices in the Constructive Standard Model (CSM) by satisfying perturbative unitarity. We use these and the 3-point vertices to calculate a comprehensive set of 4-point amplitudes in the CSM. We also introduce a package to numerically calculate phase-space points for constructive amplitudes and use it to validate the 4-point amplitudes against Feynman...
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Kylar Greene (University of New Mexico)14/05/2024, 16:15Cosmology & Dark Energy
Cosmological observables are particularly sensitive to key ratios of energy densities and rates, both today and at earlier epochs of the Universe. Well-known examples include the photon-to-baryon and the matter-to-radiation ratios. Equally important, though less publicized, are the ratios of pressure-supported to pressureless matter and the Thomson scattering rate to the Hubble rate around...
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Adrian Thompson14/05/2024, 16:15Other BSM
In this work, we explore baryon number violating interactions (BNV) within a specific model framework involving a charged iso-singlet, color-triplet scalar and a Majorana fermion with interactions in the quark sector. This model has been useful for explaining baryogenesis, neutron-antineutron oscillations, and other puzzles such as the DM-baryon coincidence puzzle. We revisit this model, with...
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Lawrence Lee Jr (University of Tennessee (US))14/05/2024, 16:15Outreach, Community Engagement & DEI
If science outreach is about connecting with new audiences, music remains a uniquely accessible form of outreach. However, physics music needn’t be limited to campy parodies. A project for creating music that is accessible at multiple technical levels will be presented. Using a form of 2D wavetable synthesis, a form of electronic music uses stereo audio signals, mapped onto an oscilloscope’s...
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Min-Gwa Park (Jeonbuk National University)14/05/2024, 16:15Neutrino Physics
We focus on the potential of neutrino - 13C neutral current interactions in clarifying the reactor antineutrino flux around the 6 MeV region. The interactions produce 3.685 MeV photon line via the process of de-excitation of 13C in organic liquid scintillators, which can be observed in reactor neutrino experiments. We expect the future measurements of neutrino - 13C cross section in JUNO and...
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London Cooper-Troendle14/05/2024, 16:15Neutrino Physics
MicroBooNE is Liquid Argon Time Projection Chamber (LArTPC), able to image neutrino interactions with excellent spatial resolution, enabling the identification of complex final states resulting from neutrino-nucleus interactions. MicroBooNE currently possesses the world's largest neutrino-argon scattering data set, with a number of published cross section measurements and more than thirty...
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Phuoc Ha (Towson University)14/05/2024, 16:15QCD & Heavy Ion Physics
We present a very simple method for calculating the mixed Coulomb-nuclear effects in the $pp$ and $\bar{p}p$ scattering amplitudes, and illustrate the method using simple models frequently used to describe their differential cross sections at small momentum transfers. Combined with the pure Coulomb and form-factor contributions to the scattering amplitude which are known analytically from...
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John Alison (Carnegie-Mellon University (US))14/05/2024, 16:15Electroweak & Higgs Physics
This talk discusses a new method to overcome common limitations in data-driven background predictions by validating the background model with synthetic data samples obtained using hemisphere mixing. These synthetic data samples allow for the validation of the extrapolation of the background model to the relevant signal region and avoid the problem of low statistical power in the most...
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Robert McGehee (University of Minnesota)14/05/2024, 16:15Dark Matter
We describe a simple dark sector structure which, if present, has implications for the direct detection of dark matter (DM): the Dark Sink. A Dark Sink transports energy density from the DM into light dark-sector states that do not appreciably contribute to the DM density. As an example, we consider a light, neutral fermion $\psi$ which interacts solely with DM $\chi$ via the exchange of a...
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Yannis Georis14/05/2024, 16:30Other BSM
Extending the Standard Model (SM) with right-handed neutrinos (RHN) provides a minimal explanation for both the origin of the SM neutrino masses through the type-I seesaw and of the present imbalance between matter and antimatter in our universe through leptogenesis. Even though the mass of these RHNs is in principle unbounded from above, an attractive possibility would be for the RHN masses...
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Dr Taewook Youn (Cornell University)14/05/2024, 16:30Cosmology & Dark Energy
With the growing precision of cosmological measurements, tensions in the determination of cosmological parameters have arisen that might be the first manifestations of physics going beyond $\Lambda$CDM. We propose a new class of interacting dark sector models, which lead to qualitatively distinct cosmological behavior, dark acoustic oscillation, which can potentially simultaneously address the...
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Ngan Nguyen14/05/2024, 16:30Dark Matter
Collisions between large fermionic dark matter bound states may produce characterisic photon bursts that are highly intense but rare in occurrence and short in duration. We discuss strategies and prospects for discovering such less explored class of indirect detection signals with nontrivial temporal structures. We also provide a concrete dark matter model that yields burst-like gamma-ray signals.
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Sam Carey (Wayne State University)14/05/2024, 16:30Neutrino Physics
The study of neutrino-nucleus scattering processes is important for the success of a new generation of neutrino experiments such as DUNE and T2K. Quasielastic neutrino-nucleus scattering, which yields a final state consisting of a nucleon and charged lepton, makes up a large part of the total neutrino cross-section in neutrino experiments. A significant source of uncertainty in the...
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Devin Michael Aebi (Texas A & M University (US))14/05/2024, 16:30Electroweak & Higgs Physics
The results of a search for Higgs boson pair (HH) production in the decay channel to two bottom quarks and two W bosons using CMS data will be presented. The search is based on proton-proton collision data recorded at √s = 13 TeV center-of-mass energy during the period 2016 to 2018, corresponding to an integrated luminosity of 138 fb−1 and includes both resonant and non resonant as well as...
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Gen Li (Carnegie Mellon University)14/05/2024, 16:30Neutrino Physics
The COHERENT collaboration made the first measurement of coherent elastic neutrino-nucleus scattering (CEvNS) and did so by employing neutrinos produced by the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory (ORNL). The uncertainty of the neutrino flux generated from the SNS is on the order of 10% making it one of COHERENT's most dominant systematic uncertainties. To address...
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Keping Xie (Michigan State University)14/05/2024, 16:30QCD & Heavy Ion Physics
In this work, we complete our CT18qed study with the neutron’s photon parton distribution function (PDF), which is essential for the nucleus scattering phenomenology. Two methods, CT18lux and CT18qed, based on the LUXqed formalism and the DGLAP evolution, respectively, to determine the neutron’s photon PDF have been presented. Various low-Q2 non-perturbative variations have been carefully...
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Jennifer Kile14/05/2024, 16:30Outreach, Community Engagement & DEI
Aside from specialized skills, physicists also have quantitative skills useful in a wide variety of contexts. Among these are the abilities to quantify uncertainty and make useful approximations. These skills, if practiced by members of the general public, can help in understanding scientific results, in understanding the progress of science, in evaluating claims from non-scientific sources,...
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Prof. Ariel Edery14/05/2024, 16:30Quantum Field & String Theory
It is well known that in QFT, perturbative series expansions in powers of the coupling constant yield an asymptotic series. At weak coupling, this is not an issue, since the series is valid at lower orders and one can use it to make reliable predictions. However, the series fails completely at strong coupling. I will show that one can develop two different types of series expansions that are...
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Matthew Knauss (William & Mary)14/05/2024, 16:45Cosmology & Dark Energy
Phase transitions provide a useful mechanism to produce both electroweak baryogenesis (EWBG) and gravitational waves (GW). We propose a left-right symmetric model with two Higgs doublets, a left-handed doublet $H_L$ and a right-handed doublet $H_R$, and a scalar singlet $\sigma$ under a $H_L \leftrightarrow H_R$ and $\sigma \leftrightarrow -\sigma$ symmetry as discussed by Gu. We utilize a...
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Miguel Angel Soto Alcaraz14/05/2024, 16:45Electroweak & Higgs Physics
The simplest extension that can be added to the SM is the addition of a real singlet scalar S, which can result in a double Higgs bosson production if this new singlet is sufficiently heavy. New benchmark points are found by maximizing the production rate, which will allow to compare to the experimental results while this are being searched. The maximum values are shown for different values of...
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Kirsten McMichael (Carnegie Mellon University)14/05/2024, 16:45Outreach, Community Engagement & DEI
nEXO is a planned next-generation neutrinoless double beta decay experiment, designed to be built at SNOLAB in Ontario, Canada. Within the international nuclear and astroparticle physics communities, we strive to be a leader and role model in the areas of Diversity, Equity, and Inclusion (DEI) while drawing inspiration from the trailblazers who came before us. In 2020 nEXO founded its...
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Zhengkang Zhang (University of Utah)14/05/2024, 16:45Quantum Field & String Theory
I will present some recent progress at the intersection between machine learning and field theories, highlighting Feynman diagram methods for neural network correlators and neural scaling laws.
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First, building on a correspondence between neural network ensembles and statistical field theories, I will introduce a diagrammatic framework to calculate neural network correlators in the large-width... -
Dr Wanwei Wu (University of Pittsburgh)14/05/2024, 16:45Neutrino Physics
NOvA, a long-baseline neutrino oscillation experiment, is primarily designed to measure the muon (anti)neutrino disappearance and electron (anti)neutrino appearance. It achieves this by utilizing two functionally identical liquid scintillator detectors separated by 810 km, positioned in the off-axis Fermilab NuMI beam, with a narrow band beam centered around 2 GeV. Energetic neutral pions,...
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Yingsheng Huang (Northwestern/Argonne)14/05/2024, 16:45QCD & Heavy Ion Physics
The X(6900) resonance, originally discovered by the LHCb collaboration and later confirmed by both ATLAS and CMS experiments, has sparked broad interests in the fully-charmed tetraquark states. Relative to the mass spectra and decay properties of fully-heavy tetraquarks, our knowledge
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on their production mechanism is still rather limited. In this talk, I will discuss the production of S-wave... -
John Coffey14/05/2024, 16:45Dark Matter
Axion-like particles (ALPs) offer a pathway for dark matter (DM) to interact with the Standard Model (SM) through a pseudoscalar mediator, addressing the absence of signals in direct detection experiments. This makes ALPs a compelling candidate for connecting DM to the SM. Our model assumes a dirac fermion DM particle that couples through an ALP. The freeze-out mechanism suggests that the ALP...
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Alec Hewitt14/05/2024, 16:45Other BSM
Heavy neutral leptons (HNLs) are an extension of the Standard Model that are well-motivated by neutrino masses, dark matter, and baryogenesis via leptogenesis. We present a comprehensive analysis of all significant HNL production and decay mechanisms. This work has been incorporated into a new module that generates events for HNLs with arbitrary couplings to the $e$, $\mu$, and $\tau$...
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Byron Abraham Daniel (Carnegie Mellon)14/05/2024, 16:45Neutrino Physics
The Karlsruhe Tritium Neutrino (KATRIN) Experiment directly measures the neutrino mass-scale with a target sensitivity of 0.3 eV/c2 by determining the shape change in the molecular tritium beta spectrum near the endpoint. KATRIN makes this measurement by employing its Magnetic Adiabatic Collimation with Electrostatic (MAC-E) Filter process to measure the integrated energy spectrum of the betas...
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Gonzalo Herrera (TUM, MPP)14/05/2024, 17:00Neutrino Physics
Neutrino-nucleus scatterings in the detector could induce electron ionization signatures due to the Migdal effect. We derive prospects for a future detection of the Migdal effect via coherent elastic solar neutrino-nucleus scatterings in liquid xenon detectors, and discuss the irreducible background that it constitutes for the Migdal effect caused by light dark matter-nucleus scatterings....
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Indrajit Saha (IIT Guwahati, India)14/05/2024, 17:00Cosmology & Dark Energy
We propose a novel framework where baryon asymmetry of the universe can arise due to forbidden decay of dark matter (DM) enabled by finite-temperature effects in the vicinity of a first order phase transition (FOPT). In order to implement this novel cogenesis mechanism, we consider the extension of the standard model by one scalar doublet $\eta$, three right handed neutrinos (RHN), all odd...
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Roberto Bruschini (Ohio State University)14/05/2024, 17:00QCD & Heavy Ion Physics
Until recently, it was widely believed that every hadron is a composite state of either three quarks or one quark and one antiquark. In the last 20 years, dozens of exotic heavy hadrons have been discovered, and yet no theoretical scheme has unveiled the general pattern. For hadrons that contain more than one heavy quark or antiquark, the Born-Oppenheimer approximation for QCD provides a...
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Kallan Berglund14/05/2024, 17:00Outreach, Community Engagement & DEI
I created a presentation, Building Inclusive Communities, and workshopped in in my classes over five years. Now, I've conducted a physics education research study to measure the impact on students' sense of belonging, scientific identity, and course performance. I will be sharing these results, as well as EDI resources for teachers, mentors, and students.
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Pankaj Munbodh (University of California Santa Cruz)14/05/2024, 17:00Dark Matter
A QCD axion with a decay constant below $ 10 ^{ 11} ~{\rm GeV} $ is a strongly-motivated extension to the Standard Model, though its relic abundance from the misalignment mechanism or decay of cosmic defects is insufficient to explain the origin of dark matter. Nevertheless, such an axion may still play an important role in setting the dark matter density if it mediates a force between the...
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Michael Donald Hank (University of Pennsylvania (US))14/05/2024, 17:00Electroweak & Higgs Physics
A search is presented for pair production of higgsinos in scenarios with gauge-mediated supersymmetry breaking. Each higgsino is assumed to decay into a Higgs boson and a nearly-massless gravitino. The search targets the $b\bar{b}$ decay channel of the Higgs bosons, leading to a reconstructed final state with at least three energetic $b$-jets and missing transverse momentum. Two complementary...
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Hsing-Yi Lai14/05/2024, 17:00Quantum Field & String Theory
The constructive method of determining amplitudes from on-shell pole structure has been shown to be promising for calculating amplitudes in a more efficient way. However, challenges have been encountered when a massless internal photon is involved in the gluing of three-point amplitudes with massive external particles. In this talk, I will describe how to use the original on-shell method,...
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London Cooper-Troendle14/05/2024, 17:00Neutrino Physics
Neutrino-nucleus cross section measurements are needed to improve interaction modeling to enable upcoming precision oscillation measurements and searches for physics beyond the standard model. There are two methods for extracting cross sections, which rely on using either the real or nominal flux prediction for the measurement. We examine the different challenges faced by these methods, and...
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Debopam Goswami (Department of Physics & Astronomy, Texas A&M University)14/05/2024, 17:00Other BSM
In the ongoing Short-Baseline Neutrino facilities such as the Short-Baseline Near Detector (SBND), MicroBooNE and ICARUS, there exists an iron dump positioned $\sim$ 45.79 m from the Fermilab Booster Neutrino Beam (BNB)’s beryllium target. The neutrinos produced from charged pion and kaon decays can undergo up-scattering off iron nuclei resulting in the production of MeV mass scale heavy...
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14/05/2024, 17:15
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Mr Fareed Alasiri (Ohio State University)14/05/2024, 17:15QCD & Heavy Ion Physics
Double-heavy hadrons can be identified as bound states in the Born-Oppenheimer potentials for QCD. We present parameterizations of the 5 lowest Born-Oppenheimer potentials from pure $SU(3)$ lattice gauge theory as functions of the separation $r$ of the static quark and antiquark sources. The parametrizations have the correct limiting behavior at small $r$, where the potentials form...
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Darcy Newmark (Massachusetts Institute of Technology)14/05/2024, 17:15Neutrino Physics
The Coherent CAPTAIN-Mills (CCM) experiment is a 10 ton liquid argon scintillation detector located at Los Alamos National Lab studying neutrino and beyond Standard Model physics. The detector is located 23m downstream from the Lujan Facility's stopped pion source which will receive 2.25 x 10^22 POT in the ongoing 3 year run cycle. CCM is instrumented with 200 8-inch PMTs, 80% of which are...
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Mr Zihao Lin (University of Rochester)14/05/2024, 17:15Neutrino Physics
We report on a global extraction of the 12C Longitudinal (RL) and Transverse (RT ) nuclear electromagnetic response functions from an analysis of all available electron scattering dats on carbon. The response functions are extracted for a large range of energy transfer ν, spanning the nuclear excitation, quasielastic, and ∆(1232 MeV) region, over a large range of the square of the...
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Haidar Esseili (University of Oregon)14/05/2024, 17:15Cosmology & Dark Energy
We calculate the effects of a light, very weakly-coupled boson $X$ arising from a spontaneously broken $U(1)_{B-L}$ symmetry on $\Delta N_{\rm eff}$ as measured by the CMB and $Y_p$ from BBN. Our focus is the mass range $1 \; {\rm eV} \, \lesssim m_X \lesssim 100 \; {\rm MeV}$. We find $U(1)_{B-L}$ is more strongly constrained by $\Delta N_{\rm eff}$ than previously considered. While some of...
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Tonnis ter Veldhuis14/05/2024, 17:15Quantum Field & String Theory
We demonstrate how the scattering amplitudes of some scalar theories, scaffolded general relativity, multi-flavor DBI, and the special Galileon, vanish at multiple loci in momentum space that include and extend their soft-limit behaviors. We elucidate the factorization of the amplitudes near the zero loci into lower point amplitudes. We explain how the occurrence of the zero loci in these...
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Ian Fisk14/05/2024, 17:30
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Hitoshi Murayama (University of California Berkeley (US))14/05/2024, 19:00
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Carter Hall (University of Maryland)15/05/2024, 08:30
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Elliot Lipeles (University of Pennsylvania (US))15/05/2024, 09:00
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Roni Harnik (Fermilab)15/05/2024, 09:30
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Peter Elmer (Princeton University (US))15/05/2024, 10:00
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Jaroslav Trnka15/05/2024, 11:00
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Rachel Mandelbaum (Carnegie Mellon University)15/05/2024, 11:30
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Zeeshan Ahmed (Stanford University)15/05/2024, 12:00
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15/05/2024, 14:00
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Tina Kahniashvili (CMU (USA) and IliaUni (Georgia))15/05/2024, 14:00Gravity & Gravitational Waves
Recently, NANOGrav collaboration (based on 12.5 years of observation) reported strong evidence [Arzoumanian et al. (2020)] and later, the analysis of 15 years of data resulted in confirming the detection of a stochastic gravitational wave background [Agazie et al. (2023)] that can be understood, along with the possibility of the astrophysical sources (such as supermassive black holes) induced...
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Benjamin Lehmann (Massachusetts Institute of Technology)15/05/2024, 14:00Dark Matter
Primordial black holes (PBHs) remain a viable dark matter candidate in the asteroid-mass range. We point out that in this scenario, the PBH abundance would be large enough for at least one object to cross through the inner Solar System per decade. Since Solar System ephemerides are modeled and measured to extremely high precision, such close encounters could produce detectable perturbations to...
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Mark Gonzalez15/05/2024, 14:00QCD & Heavy Ion Physics
Energy correlators, which as a jet-substructure observable measure correlations between energy detectors (calorimeters) in a collider experiment, have received significant attention over the last few years in both the theory/phenomenology and experimental communities. This success has prompted investigations into how energy correlators can be further used, such as in the study of both hot and...
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Wenjie Huang15/05/2024, 14:00Neutrino Physics
Unravelling the mystery of neutrino masses is one of the top priorities in particle physics and tremendous model building efforts have been devoted to exploring new physics beyond the Standard Model (BSM) in order to state the puzzle succinctly. In this work, we consider a simple extension of the standard model of particle physics (SM) — a class of models called Two-Higgs Doublet Model with...
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Sergo Jindariani (Fermi National Accelerator Lab. (US))15/05/2024, 14:00
A multi-TeV muon collider has the unique potential to provide both precision measurements and the highest energy reach in one machine that cannot be paralleled by any currently available technology. There has been a strong physics interest in Muon Colliders recently, as indicated by the number of publications, workshops, Snowmass activities, and the 2023 P5 report which referred to it as...
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AJAY Kaladharan15/05/2024, 14:00Electroweak & Higgs Physics
Primordial black holes (PBHs) can be formed from the collapse of large-density inhomogeneities in the early Universe through various mechanisms. One such mechanism is a strong first-order phase transition, where PBH formation arises due to the delayed vacuum transition. The probabilistic nature of bubble nucleation implies that there is a possibility that large regions are filled by the false...
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Kevin Zhou (Stanford/SLAC)15/05/2024, 14:00Axion
In the presence of axion dark matter, electrons experience an "axion wind" spin torque and an "axioelectric" force, which give rise to magnetization and polarization currents in common ferrite materials. The radiation produced by these currents can be amplified in multilayer setups, which are potentially sensitive to the QCD axion without requiring a large external magnetic field.
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Guang Yang (Brookhaven National Lab)15/05/2024, 14:00Instrumentation
The large-scale Water-based Liquid Scintillator (WbLS) detector is a new opportunity for the neutrino community to accomplish competent long-baseline neutrino oscillation and unprecedented low-energy neutrino measurements. Several table-top WbLS detection systems have been implemented at BNL and LBNL.
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It is critical to advance further with a mid-scale demonstrator to understand and tune the... -
15/05/2024, 14:15
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Monica Leys15/05/2024, 14:15Axion
The future Electron-Ion Collider (EIC) will have the capability to collide various particle beams with large luminosities in a relatively clean environment, providing access to untouched parameter space for new physics. In this study, we will look at the EIC’s sensitivity to Axion-like particles (ALPs) that are created via photon fusion and promptly decay to photons. Proton-electron collisions...
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Fazlollah Hajkarim (University of Oklahoma)15/05/2024, 14:15Gravity & Gravitational Waves
We analyse sound waves arising from a cosmic phase transition where the full velocity profile is taken into account as an explanation for the gravitational wave spectrum observed by multiple pulsar timing array groups. Unlike the broken power law used in the literature, in this scenario the power law after the peak depends on the macroscopic properties of the phase transition, allowing for a...
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Sebastián Urrutia Quiroga (Institute for Nuclear Physics, University of Washington, USA)15/05/2024, 14:15Other BSM
In the context of the left-right symmetric model, we study the interplay of the neutrinoless double beta ($0\nu\beta\beta$) decay, parity-violating Møller scattering, and high-energy colliders, resulting from the Yukawa interaction of the right-handed doubly-charged scalar to electrons, which could evade the severe constraints from charged lepton flavor violation. The half-life $\onbb$ decay...
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Evan Craft (Yale University)15/05/2024, 14:15QCD & Heavy Ion Physics
Understanding the behaviour of heavy quarks is important for painting a coherent picture of QCD, both formally and phenomenologically, and the upcoming runs at the LHC will provide unprecedented statistics for precision measurements related to heavy flavor. A natural object for initiating these studies are Energy and Charge Correlators, which measure correlations of energy flow, along with the...
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Gregory Suczewski15/05/2024, 14:15Dark Matter
If present in the early universe, primordial black holes (PBHs) will accrete matter and emit high-energy photons, altering the statistical properties of the Cosmic Microwave Background (CMB). This mechanism has been used to constrain the fraction of dark matter that is in the form of PBHs to be much smaller than unity for PBH masses well above one solar mass. Moreover, the presence of dense...
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Andrija Rasovic15/05/2024, 14:15Electroweak & Higgs Physics
Its been demonstrated that "optimized partial dressing" (OPD) thermal mass resummation, which uses gap equation solutions inserted into the tadpole, efficiently tames finite temperature perturbation theory calculations of the effective thermal potential, without necessitating use of the high-temperature approximation. Even though it was shown that OPD has a similar scale dependence as 3D EFT...
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Abigail Kopec (Bucknell University)15/05/2024, 14:15Instrumentation
Liquid Xenon Time Projection Chambers have dominated the search for dark matter in the form of Weakly Interacting Massive Particles. The current generation (LZ, XENONnT, and PandaX) are becoming sensitive to coherent elastic neutrino-nucleus scatters from the Boron-8 solar neutrino component of the neutrino fog. However, current limits from these detectors are still two orders of magnitude...
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J. Leo Kim (Queen's University)15/05/2024, 14:30Dark Matter
We demonstrate a novel mechanism for forming dark compact objects and black holes through a dissipative dark sector. Heavy dark sector particles can be responsible for an early matter dominated era before Big Bang Nucleosynthesis (BBN). Density perturbations in this epoch can grow and collapse into tiny dissipative dark matter halos, which can cool via self-interactions. Once these halos have...
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Dr Supriya Senapati (University of Massachusetts Amherst)15/05/2024, 14:30Neutrino Physics
We investigate the possibility of neutrinoless double beta decay $( 0 \nu \beta\beta)$ and leptogenesis within a low-scale seesaw mechanism with additional sterile neutrinos. The general effective field theory (EFT) considerations suggest that if there are experimentally observable signatures in $0 \nu \beta \beta$ decay and the lepton asymmetry generated by the right-handed neutrinos, the...
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Victor Baules15/05/2024, 14:30Electroweak & Higgs Physics
We consider a classically conformal $U(1)$ extension of the Standard Model (SM) in which the new $U(1)$ symmetry is radiatively broken via the Coleman-Weinberg mechanism, after which the $U(1)$ Higgs field $\phi$ drives electroweak symmetry breaking through a mixed quartic coupling with the SM Higgs doublet via coupling constant $\lambda_{mix}$. For $m_{\phi}$ < $\frac{m_{h}}{2}$, the coupling...
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Chris Rogers15/05/2024, 14:30
The muon collider has been identified as potentially the fastest, cheapest and most sustainable route to push back the energy frontier. One of the key challenges for the muon collider is to deliver a beam having an unprecedented muon beam brightness, so that extremely high luminosity can be reached. Beam brightness has two components; the current of muons that is accelerated, and the size of...
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Dr Wei Wang15/05/2024, 14:30Instrumentation
Liquid xenon (LXe) detectors are used in many experiments, including the proposed searches for dark matter and neutrinoless double-beta decay, DARWIN and nEXO. LXe scintillates in vacuum ultraviolet (VUV) region, and understanding optical properties of materials and photosensors in this region is important for maximizing sensitivity of these experiments. LIXO is a setup dedicated to such...
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Mithila Mangedarage (Illinois Institute of Technology)15/05/2024, 14:30QCD & Heavy Ion Physics
We introduce “power jets,” a scheme that uses the fully correlated information of the QCD power spectrum to go beyond conventional, sequential jet clustering algorithms. This affords us a kinematic reconstruction that can accurately probe the underlying hard physics of an event, even in the presence of high pile up, and subject to finite sampling.
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Takuya Okawa15/05/2024, 14:30Axion
Owing to its high temperature, a copious number of heavy axion-like particles (ALPs) coupled to the photon field are produced by the Primakoff process and photon coalescence process in the plasma of massive stars in the later stages of their evolution. These heavy axions produced inside stars spontaneously decay into two photons, yielding the possibly detectable photon signal by current and...
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Zafri Ahmed Borboruah (IIT Bombay)15/05/2024, 14:30Gravity & Gravitational Waves
We show that observations of primordial gravitational waves of inflationary origin can shed light into the scale of flavor violation in a flavon model. The mass hierarchy of fermions can be explained by a flavon field. If it exists, the energy density stored in oscillations of the flavon field around the minimum of its potential redshifts as matter and is expected to dominate over radiation in...
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Anni Xiong (University of Oregon (US))15/05/2024, 14:30Other BSM
The discovery of the neutral Higgs Boson of mass 125 GeV by the ATLAS and CMS experiments in 2012 has prompted further discussions on whether extensions of the Standard Model (SM) scalar sector exist, other than the observed SM doublet. The two-Higgs-doublet model (2HDM) is one of such extensions predicting the additional doublets. This model is supported by Supersymmetry and could provide the...
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Dr Chen Sun (Los Alamos National Laboratory (LANL))15/05/2024, 14:45Axion
We identify a new resonance, axion magnetic resonance (AMR), that can greatly enhance the conversion rate between axions and photons. A series of axion search experiments rely on converting them into photons inside a constant magnetic field background. A common bottleneck of such experiments is the conversion amplitude being suppressed by the axion mass when $m_a \gtrsim 10^{-4}~$eV. We...
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Jared Barron15/05/2024, 14:45Dark Matter
Atomic dark matter is a dark sector model including two fermionic states oppositely charged under a dark U(1) gauge symmetry, which can result in rich cosmological signatures. I discuss recent work using cosmological n-body simulations to investigate the impact of an atomic dark matter sector on observables such as the galactic UV luminosity function at redshifts >10, and consider the...
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Wenqi Ke (University of Minnesota)15/05/2024, 14:45Gravity & Gravitational Waves
Different inflation models make testable predictions that are often close to each other, and breaking this degeneracy (i.e. distinguishing different models) may then require additional observables. In this talk, we explore the minimal production of gravitational waves during reheating after inflation, arising from the minimal coupling of the inflaton to gravity. The subsequent signal shows a...
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Masooma Sarfraz (University of Delaware)15/05/2024, 14:45Instrumentation
NuDot serves as a significant testbed for liquid scintillator research and development, with a primary objective of reducing one of the major challenges encountered in large-scale liquid scintillator neutrinoless double beta decay (0νββ) investigations—the solar neutrino background. Utilizing machine learning techniques and high-speed electronics, NuDot aims to showcase its capability in...
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Yanda Wu (Tsung-Dao Lee Institute/Shanghai Jiao Tong University)15/05/2024, 14:45Electroweak & Higgs Physics
Our study presents a comprehensive analysis of baryon number violation during the electroweak phase transition (EWPT) within the framework of an extended scalar electroweak multiplet. We perform a topological classification of scalar multiplet's representation during the EWPT, identifying conditions under which monopole or sphaleron field solutions emerge, contingent upon whether their...
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Jose Carpio Dumler15/05/2024, 14:45Neutrino Physics
We constrain limits on the decay and annihilation of very heavy dark matter (VHDM) particles in the mass range of $10^{9}-10^{16}$ GeV with the aid of projected neutrino flux sensitivity of future generations of neutrino telescopes, such as GRAND and IceCube-Gen2 radio upgrade. Particularly interesting constraints are obtained from the future lunar ultralong wavelength (ULW) radio telescope,...
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John Lawless (University of Tennessee (US)), Lawrence Lee Jr (University of Tennessee (US))15/05/2024, 14:45QCD & Heavy Ion Physics
In collider physics, the properties of hadronic jets are often measured as a function of their lab-frame momenta. However, jet fragmentation must occur in the particular rest frame of all color-connected particles. Since this frame need not be the lab frame, the fragmentation of a jet depends on the properties of its sibling objects. This non-factorizability of jets has consequences for jet...
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Juan Carlos Cardenas Jr (University of Texas at Arlington (US))15/05/2024, 14:45Other BSM
The Standard Model provides the best description of the known fundamental particles and their interactions to date. However, findings regarding excesses of taus show a tension between Standard Model predictions and observed data. This tension can be understood in the context of a 2HDM. In this talk, I will show the recent results of the model-independent search for charged Higgs bosons via...
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J. Scott Berg (Brookhaven National Laboratory)15/05/2024, 14:50
The advantage of muons over electrons for a lepton collider is that one can accelerate and collide them in circular machines. Unfortunately muons are difficult to produce and have a short lifetime, and these basic issues drive most design choices for a muon collider. In particular, unlike most colliders, all the muons of a given sign in each pulse are combined into a single intense bunch. To...
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15/05/2024, 15:00
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Keegan Humphrey (University of Toronto)15/05/2024, 15:00Dark Matter
Atomic Dark Matter (aDM) is a well motivated class of models which has potential to be discovered at ground based Direct Detection experiments. The class of models we consider contains a massless dark photon and two Dirac fermions with different masses and opposite dark charge (dark protons and dark electrons), which will generally interact with the Standard Model through a kinetic mixing...
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Yunjia Bao (University of Chicago)15/05/2024, 15:00Gravity & Gravitational Waves
Gravitational-wave (GW) signals offer unique probes into the early universe dynamics, particularly those from topological defects. We investigate a scenario involving a two-step phase transition resulting in a network of domain walls bound by cosmic strings. By introducing a period of inflation between the two phase transitions, we show that the stochastic GW signal can be greatly enhanced....
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Kaifei Ning15/05/2024, 15:00Electroweak & Higgs Physics
Minimal Supersymmetric Standard Model(MSSM) shortcomings in inducing a strong first-order phase transition and providing sufficient CP violation to explain the observed baryon asymmetry in the universe(BAU). In this talk, I will discuss how BAU could be generated in the context of Next-to-Minimal Supersymmetric Standard Model(NMSSM), and how strong the CP violation ingredients in NMSSM will be...
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Benji Lunday (University of Pennsylvania)15/05/2024, 15:00Machine Learning & AI
The calibration of the energy scale and resolution of jets, the collimated sprays of particles initiated by quarks and gluons, is important for many precision measurements and searches for physics beyond the standard model at the Large Hadron Collider (LHC). Currently within ATLAS, a series of calibrations is required to correct jets for effects of pileup and detector response. This results in...
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Vedran Brdar (Oklahoma State University (US))15/05/2024, 15:00Axion
I will discuss a recently proposed novel experimental setup for axion-like particle (ALP) searches. Nuclear reactors produce a copious number of photons, a fraction of which could convert into ALPs via the Primakoff process in the reactor core. The generated flux of ALPs leaves the nuclear power plant, and its passage through a region with a strong magnetic field results in efficient...
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Majd Ghrear15/05/2024, 15:00Instrumentation
Detecting the detailed 3D topology of ionization in detectors is broadly desirable for enabling new techniques in nuclear and particle physics. One example is the directional detection of nuclear recoils from neutrinos or dark matter, which may prove critical for probing dark matter beneath the neutrino fog and affirming its galactic origin. Gaseous time projection chambers (TPCs) can enable...
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Francis Burk15/05/2024, 15:00Neutrino Physics
Using the s-wave unitarity constraint on a general Type-1 Seesaw Model, we investigate the effects that unitarity bounds place on a general massive neutrino mixing angle, compare these new constraints against the typical analytical Type-1 mixing, and comment on how these constraints affect the available phase space for massive neutrino searches.
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Tova Ray Holmes (University of Tennessee (US))15/05/2024, 15:10
Muon colliders offer an exciting opportunity for high energy exploration, but the rapidly decaying beam causes challenges throughout the system. This talk will focus on detector design and machine-detector interface optimization, presenting recent developments targeting a 10 TeV collider as well as outlook for the future.
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15/05/2024, 15:15
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15/05/2024, 15:15
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15/05/2024, 15:15
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jesus miguel celestino15/05/2024, 15:15Neutrino Physics
In the present work, I will discuss the so-called non-unitary effects in the neutrino mixing matrix that appear when we add more massive neutrino states. In the context of the first detection of FASER$\nu$, I studied the sensitivity to non-unitary parameters in FASER$\nu$ and FASER$\nu$2. Other phenomenology related to non-unitarity will also be discussed. This work is based on: 2309.00116
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Manuel Diaz15/05/2024, 15:15Electroweak & Higgs Physics
We employ a derivative expansion method to analyze the effective action within
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the SU(2)-Higgs model at finite temperature. By utilizing a specific power
counting scheme, we compute gauge-invariant constraints on primordial gravi-
tational waves arising from a thermal first-order electroweak phase transition.
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Ms Lekhika Malhotra (Indian Institute of Technology Bombay)15/05/2024, 15:15Gravity & Gravitational Waves
The dynamical generation of right-handed-neutrino (RHN) masses $M_N$ in the early Universe naturally entails the heavy scalar $\phi$, responsible for B-L symmetry breaking, whose decay in early universe leads to novel Gravitational Waves (GW) spectral shapes arising from the propagation of primordial tensor modes generated during inflation and that re-enter the horizon before or during an...
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Linda Yuan15/05/2024, 15:15Dark Matter
Atomic dark matter (ADM) models, with a minimal content of a dark proton, dark electron, and a massless dark photon, are motivated by theories such as Mirror Twin Higgs. ADM models might address the seeming tension between cold dark matter (CDM) and observations at small scales: excessive number of dwarf galaxies in the Milky Way, and the cuspiness of galactic cores. ADM has been shown to...
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Muhammad Yusuf Aamir (University of Maryland (US))15/05/2024, 15:15Instrumentation
Plastic scintillators are common materials in sampling calorimeters. At proton-proton colliders such as the LHC, the intense radiation environment can alter their optical properties, including the index of refraction. We present measurements of the change in the index of refraction for doses between 12 and 70 kGy and show that the size of the change depends on the presence of oxygen. We do...
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Doyeong Kim (Argonne National Laboratory)15/05/2024, 16:00Instrumentation
The ATLAS detector will be upgraded to cope with challenging new conditions at the HL-LHC. The upgrades will include extended geometric coverage and finer detector resolution. The success of the research programs at the HL-LHC will strongly rely on tracking performance. Reconstructing individual particles in the HL-LHC collision environment with thousands of charged particles being produced...
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Kayla Leonard DeHolton15/05/2024, 16:00Neutrino Physics
The IceCube DeepCore detector at the South Pole has been collecting GeV-scale atmospheric neutrino data for the past decade. DeepCore measures atmospheric neutrino oscillations with precision comparable to accelerator-based experiments, while also complementing accelerator measurements by probing longer distance scales and higher energies, peaking above the tau lepton production threshold. In...
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Samuel Homiller (Harvard University)15/05/2024, 16:00Other BSM
Nelson–Barr models, which assume that CP is a spontaneously broken symmetry of nature, are a well-known solution to the strong CP problem with no new light degrees of freedom. Nevertheless, the spontaneous breaking of CP has dramatic implications in cosmology. It was recently shown that domain walls which form from this spontaneous breaking are exactly stable and must therefore be inflated...
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Amit Tiwari15/05/2024, 16:00Gravity & Gravitational Waves
We explore a variety of composite topological structures that arise from the spontaneous breaking of SO(10) to SU(3)c × U(1)em via one of its maximal subgroups SU(5) × U(1)χ, SU(4)c × SU(2)L × SU(2)R, and SU(5) × U(1)X (also known as flipped SU(5)). They include i) a network of ℤ strings which develop monopoles and turn into necklaces with the structure of ℤ2 strings, ii) dumbbells connecting...
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Prof. Brooks Thomas (Lafayette College)15/05/2024, 16:00Cosmology & Dark Energy
It has recently been realized that many extensions of the Standard Model give rise to cosmological histories exhibiting extended epochs of cosmological stasis — epochs wherein the abundances of multiple energy components (such as matter, radiation, or vacuum energy) remain effectively constant despite cosmological expansion. In this talk, I shall discuss a novel realization of stasis...
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Swagato Banerjee (University of Louisville (US))15/05/2024, 16:00Quark and Lepton Flavor Physics
Belle II is considering upgrading SuperKEKB with a polarized electron beam. The introduction of beam polarization to the experiment would significantly expand the physics program of Belle II in the electroweak, dark , and lepton flavor universality sectors. For all of these future measurements a robust method of determining the average beam polarization is required to maximize the level of...
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Arie Bodek (University of Rochester (US))15/05/2024, 16:00Electroweak & Higgs Physics
The forward-backward asymmetry in Drell–Yan production and the effective leptonic weak mixing angle are measured using a sample of proton-proton collisions at $\sqrt{s}$ = 13 TeV collected by the CMS experiment and corresponding to an integrated luminosity of 137 fb−1. The measurement uses both dimuon and dielectron events, and is performed as a function of the dilepton’s mass and rapidity....
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Jonathan Lee Feng (University of California Irvine (US))15/05/2024, 16:00
The recent detection of neutrinos at the LHC has ushered in a new era of multi-messenger collider physics. The Forward Physics Facility is an underground cavern that will allow the LHC to fully exploit this new capability in the HL-LHC era. The FPF will house several experiments, which will detect thousands of TeV-energy neutrinos each day, with far-reaching implications for neutrino physics,...
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Yue Zhao15/05/2024, 16:00Dark Matter
Over ten years ago, Fermi observed an excess of GeV gamma rays from the Galactic Center whose origin is still under debate. One explanation for this excess involves annihilating dark matter; another requires an unresolved population of millisecond pulsars concentrated at the Galactic Center. We use the results from LIGO/Virgo's most recent all-sky search for quasi-monochromatic, persistent...
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Miles Garcia (University of Delaware)15/05/2024, 16:00Astro-particle Physics
In October 2022, gamma-ray telescopes observed an extremely bright gamma-ray burst, GRB221009A. This event was quickly heralded as the brightest GRB of all time (BOAT) by several metrics. Followup searches for neutrino emission were also performed with the IceCube detector. In this talk, I will present the results of an analysis searching for low-energy antineutrino emission from GRB221009A in...
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Benjamin John Rosser (University of Chicago (US))15/05/2024, 16:15Instrumentation
The ATLAS experiment is currently preparing for the High Luminosity LHC era, scheduled to begin in a few years time with the start of run 4. ATLAS will be upgraded to support at least 200 simultaneous proton-proton interactions per bunch crossing. As part of these upgrades, the trigger system is also being upgraded to support a 10x increase in readout rate, and-- for the first time-- a...
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Källan Berglund (Penn State IGC)15/05/2024, 16:15Gravity & Gravitational Waves
In my recent publication, Quasiclassical solutions for static quantum black holes, we derive novel nonlocal effects near the horizon of a quantum-corrected black hole. In this talk, I will outline two follow-up papers nearing submission. The first reinterprets this model as a quantum superposition of classical black hole spacetimes with a gaussian distribution of varying mass, broadening the...
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Ms Anna Paulsen (Lafayette College)15/05/2024, 16:15Cosmology & Dark Energy
Cosmological stasis is a phenomenon in which multiple energy components in the universe (such as matter, radiation, or vacuum energy) maintain constant abundances despite cosmological expansion. Such epochs have recently been shown to arise naturally in cosmologies associated with numerous extensions of the Standard Model, and can persist across many e-folds of expansion. In this talk, I...
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Tristan Schefke (Louisiana State University (US))15/05/2024, 16:15Neutrino Physics
T2K (Tokai to Kamioka) is a Japan-based long-baseline neutrino oscillation experiment designed to measure (anti)neutrino flavor oscillations. A neutrino beam peaked around 0.6 GeV is produced in Tokai and directed toward the water Cherenkov detector Super-Kamiokande, which is located 295 km away. A complex of near detectors is located at 280 m and is used to constrain the flux and...
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Joshua Tong (Stanford University)15/05/2024, 16:15Dark Matter
A wide variety of celestial bodies have been considered as dark matter detectors. Which stands the best chance of delivering the discovery of dark matter? Which is the most powerful dark matter detector? We investigate a range of objects, including the Sun, Earth, Jupiter, Brown Dwarfs, White Dwarfs, Neutron Stars, Stellar populations, and Exoplanets. We quantify how different objects are...
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Mr Sumit Biswas (Student)15/05/2024, 16:15Other BSM
Our objective is to address the strong CP problem by leveraging softly broken Parity invariance within the framework of the Quark-Lepton Unified (Pati-Salam) Model, where fermions undergo the "see-saw" mass generation mechanism. The incorporation of vector-like fermions facilitates the realization of this mechanism. The smallness of the Physical Theta-parameter ($\bar{\theta}$) is attributed...
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Murong Cheng15/05/2024, 16:15Quark and Lepton Flavor Physics
The Fermilab Muon g-2 experiment aims to measure the anomalous magnetic moment of the muon, a_mu, to a precision of 140 parts per billion. Continuing to improve the precision of this measurement permits a more detailed comparison between the experimental value and theoretical prediction. The value of a_mu is extracted by measuring the precession frequency of the muon, omega_a, along with a...
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Garv Chauhan (Virginia Tech)15/05/2024, 16:15Astro-particle Physics
Sterile neutrinos constitute one of the simplest solutions to explain the origin of neutrino masses. They can be easily produced in the hot and dense core of a core-collapse supernova (SN). Firstly, I'll revisit the SN1987A cooling bounds for dipole portal using the integrated luminosity method, which yields more reliable results than emissivity loss criterion. I'll then discuss a novel bound...
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Prachi Atmasiddha (University of Pennsylvania)15/05/2024, 16:15Electroweak & Higgs Physics
In the standard model of particle physics, the spontaneous symmetry breaking of the complex Higgs field gives rise to the massive Higgs boson and three Goldstone bosons. These Goldstone bosons give the longitudinal degree of freedom to the W and Z bosons. This analysis studies diboson polarization states, in a phase space where the longitudinal-longitudinal contribution is enhanced, with $WZ$...
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Sean Heston15/05/2024, 16:30Astro-particle Physics
We constrain the interaction cross-section between neutrinos and dark matter using the inferred dark matter density profiles of Milky Way dwarf spheroidal galaxies. Assuming $\Lambda$CDM (DM is cold, collisionless, no self-interactions), energy injection into the dark matter sub-halo is needed to transform an initially cusped profile into a cored profile. Using estimates of the core sizes from...
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Mr Jonah Barber (University of Arizona)15/05/2024, 16:30Cosmology & Dark Energy
Recently, it has been shown that there can exist a type of cosmological epoch in which the abundances of different energy components remain essentially fixed for an extended period. This phenomenon, which is known as cosmic stasis, has been shown to arise in a variety of BSM contexts. In all previous realizations of stasis, however, the sustained transfer of energy density between energy...
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Tao Zhou (Texas A&M University)15/05/2024, 16:30Neutrino Physics
Decaying sterile neutrino can mimic $\nu_\mu \to \nu_e$ oscillation signals at neutrino experiments. We revisit this possibility as a solution to the MiniBooNE and LSND puzzles in view of new data from MicroBooNE. Using MicroBooNE's search for an excess of $\nu_e$ in the Booster beam, we derive new limits in the parameter space of models where the sterile neutrino decays via mixing or...
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Ethan Martinez15/05/2024, 16:30Quark and Lepton Flavor Physics
The Mu2e experiment at Fermilab will enable the search for the neutrinoless muon to electron conversion in the field of an Al nucleus, a charged lepton flavor violating process. If observed, there would be a clear indication of physics beyond the Standard Model. Mu2e aims to reach a single event sensitivity of $3\times10^{17}$, improving from the previous limit by 4 orders of magnitude. This...
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Steven Clark (Hood College)15/05/2024, 16:30Dark Matter
Indirect dark matter experiments probe dark matter properties by searching for the products or other observables that result from interactions, rather than measuring dark matter directly. Here we consider a two-component dark matter model where observable indirect signals are produced from lightly boosted dark matter particles produced from a more traditional dark matter candidate. In this...
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Shih-Chieh Hsu (University of Washington Seattle (US))15/05/2024, 16:30
FASER represents a novel experiment for LHC Run 3. The experiment, which is located 480 meters away from the ATLAS collision point and faces forward, is intended to look for neutral, weakly-interacting, and long-lived particles that go beyond the Standard Model and investigate high energy neutrinos of all flavors. FASER's most recent physics results will be discussed, as well as the...
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Nathan Dale Young (University of Oregon (US))15/05/2024, 16:30Instrumentation
An upgraded all silicon Inner Tracker (ITk) is under construction for the HL-LHC upgrade of the ATLAS detector. This new detector system will be required to maintain and improve tracking performance and vertex reconstruction in the high pileup environment and to handle the increased radiation expected in the HL-LHC. ITk is comprised of the silicon strip and silicon pixel detectors. The US is...
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Wolfram Ratzinger (Weizmann Institute)15/05/2024, 16:30Other BSM
We show that in the Nelson-Barr solution to the strong CP-problem a naturally light scalar can arise. The dependence of the CKM matrix elements on this new scalar is its predominant coupling. It gives rise to a completely new phenomenology if this field constitutes dark matter, as CKM elements vary periodically in time.
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Marcell Howard15/05/2024, 16:30Gravity & Gravitational Waves
Primordial black holes (PBHs) are plausible dark matter candidates that formed from the gravitational collapse of primordial density fluctuations. Current observational constraints allow asteroid-mass PBHs to account for all of the cosmological dark matter. We show that elastic scattering of a cosmological gravitational wave background, these black holes generate spectral distortions on the...
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Andrew C Roberts (Carnegie-Mellon University (US))15/05/2024, 16:30Electroweak & Higgs Physics
We propose an analysis to measure the branching fraction of the Z boson decaying to $b\bar{b}b\bar{b}$ at the CMS detector. This quantity was previously measured by the LEP experiments to an uncertainty of about $36\%$ but has not yet been measured at the LHC; such a measurement would be a high-precision test of QCD involving $b$-quarks. The rarity of this decay, about $4*10^{-4}$, and the...
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Philip Weigel (Massachusetts Institute of Technology)15/05/2024, 16:45Neutrino Physics
The existence of sterile neutrinos can lead to a matter-enhanced resonance that results in a unique disappearance signature for Earth-crossing neutrinos, providing an alternative method for probing the short baseline anomalies. In order to reconcile the tension between appearance and disappearance experiments, decay mechanisms for the heavy sterile mass state have been proposed. In this talk,...
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Aidan Reilly15/05/2024, 16:45Dark Matter
Dark kinetic heating of neutron stars has been previously studied as a promising dark matter detection avenue. Kinetic heating can occur when dark matter is sped up to relativistic speeds in the strong gravitational well of high escape velocity objects, and deposits this kinetic energy after becoming captured by the object, thereby increasing its temperature. We show that dark kinetic heating...
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LINGFENG LI (Brown U.)15/05/2024, 16:45Other BSM
We discuss dark shower signals at the LHC from a dark QCD sector, containing GeV-scale dark pions. The portal with the Standard Model is given by the mixing of the $Z$ boson with a dark $Z^\prime$ coupled to the dark quarks. Both mass and kinetic mixings are included, but the mass mixing is the essential ingredient, as it is the only one mediating visible decays of the long-lived dark pions on...
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Badal Bhalla (University of Oklahoma)15/05/2024, 16:45Astro-particle Physics
The exploration of dark sector mediators by gravitational waves from binary inspirals has been a subject of recent interest. Dark mediators typically generate a Yukawa-like potential that either directly impacts the orbital decay through dipole radiation or indirectly through altering the effective gravitational constant. However, with the rescaling of the binary component’s mass, the...
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Anthony Maurel Carroll (University of Oregon (US))15/05/2024, 16:45Instrumentation
The Large Hadron Collider (LHC) collides bunches of protons spaced 25 ns apart at a total center of momentum energy of 13.6 TeV, producing an event rate of 40 MHz. This generates about a petabyte worth of information every second, but this is far too much data to feasibly save for offline analysis. To increase the chances of saving interesting physics events, the ATLAS detector implements a...
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He He (University of Wisconsin Madison (US))15/05/2024, 16:45Electroweak & Higgs Physics
Diboson production in association with jets is studied in the fully leptonic final states, pp → (Z/γ∗)(Z/γ∗) → 2ℓ2ℓ’, (ℓ, ℓ’ = e or μ), in proton-proton collisions at a center-of-mass energy of 13 TeV. The data sample corresponds to an integrated luminosity of 138 $\textrm{fb}^{−1}$ collected with the CMS detector at the LHC. Differential distributions and normalized differential cross...
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Matej Roguljic (Johns Hopkins University (JHU))15/05/2024, 16:45Quark and Lepton Flavor Physics
Over the years, the Lorentz-boosted regime has become an attractive area for performing measurements and searches at the LHC. This has led to an increasing importance of boosted-jet tagging algorithms. The algorithms identifying jets originating from a massive particle decaying to b or c quark-antiquark pairs, employed in CMS Run 2 analyses, are shown in this talk. The talk summarises their...
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Manuel Diaz15/05/2024, 16:45Gravity & Gravitational Waves
A new form of quasiclassical space-time dynamics for constrained systems reveals how quantum effects can be derived systematically from canonical quantization of gravitational systems. These quasiclassical methods lead to additional fields, representing quantum fluctuations and higher moments, that are coupled to the classical metric components. The new fields describe nonadiabatic quantum...
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Edward Broadberry (University of Maryland, College Park)15/05/2024, 16:45Cosmology & Dark Energy
Cosmological collider physics, a mechanism in which heavy particles produced during inflation leave an observable footprint in primordial non Guassianities, carries the prospect of probing physics at scales far higher than any terrestrial collider. Supersymmetric grand unified theories (SUSY GUTs) are a highly motivated target, but the high unification scale is orders of magnitude above the...
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Prof. Jianming Bian (University of California Irvine (US))15/05/2024, 16:45
The Forward Physics Facility (FPF) is a proposed program to build an underground cavern with the space and infrastructure to support a suite of far-forward experiments at the Large Hadron Collider during the High Luminosity era (HL-LHC). The Forward Liquid Argon Experiment (FLArE) is a proposed Liquid Argon Time Projection Chamber (LArTPC) based experiment designed to detect very high-energy...
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Alberto Navarro (Oklahoma State University)15/05/2024, 17:00Top Quark Physics
Spin correlations in top-quark pair production have been recently used to measure Entanglement at high energy. In this context, the semileptonic channel may play an important role due to its large cross section. However, the unambiguous identification of the hadronic top decay products that correlated the most with the top quark polarization is challenging. In this talk, we introduce and use...
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Saurav Das (Washington University in St. Louis)15/05/2024, 17:00Axion
The string theory axions can naturally form stable string-domain wall network. The later collapse of the domain walls produce more than one type of axion mass eigenstates apart from gravitational waves.
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Joshua Lockyer15/05/2024, 17:00Other BSM
Dark-showers offer a compelling collider signature for Hidden Valley models featuring a confining dark sector. Our work extends the investigation of these models to near-conformal theories where the running coupling, controlled by renormalization group equations (RGE), flows near to an infra-red fixed point. We establish a framework of two classes of RGE solutions which cover much of the...
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Lillian Santos-Olmsted15/05/2024, 17:00Dark Matter
We show that Milky Way white dwarfs are excellent targets for dark matter (DM) detection. Using Fermi and H.E.S.S. Galactic center gamma-ray data, we investigate sensitivity to DM annihilating within white dwarfs into long-lived or boosted mediators and producing detectable gamma rays. Depending on the Galactic DM distribution, we set new constraints on the spin-independent scattering cross...
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Peiran Li (University of Minnesota)15/05/2024, 17:00Electroweak & Higgs Physics
We investigate the $W$ boson exotic decay channel, $W \rightarrow \ell\ell\ell \nu$, at LHC. Although the decay branching ratio is suppressed by the four body final states, the large abundance of produced W boson make the compensation. After enumerating the signal and all classes of background, the Deep Neural Network (DNN) machine learning is exploited for optimization. Results indicate that...
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Mudit Rai (Texas AM University)15/05/2024, 17:00Gravity & Gravitational Waves
We investigate the effects of change in temperature of thermal bath via non-adiabatic conditions on the phase transition and it's gravitational wave signature. Our preliminary results show that it is possible to get gravitational waves with shifted frequency due to the thermal kick to the bath in the early universe. This is a novel result and is ubiquitous in scenarios with non-instantaneos...
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Praniti Singh (Brown University (US))15/05/2024, 17:00Astro-particle Physics
Exploring the nexus between macroscopic planetary science and Beyond Standard Model (BSM) physics offers avenues to search for novel particle signatures. One such connection involves investigating deviations in celestial object motion from well-established theories of gravity. These deviations are attributed to the influence of long-range forces mediated by new ultralight particles, referred...
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Sindhu Murthy (Carnegie-Mellon University (US))15/05/2024, 17:00Instrumentation
The CMS Collaboration is preparing to build a new high-granularity end-cap calorimeter, the HGCAL, to be installed as a replacement end-cap calorimeter for the High Luminosity LHC era. We discuss silicon modules that will make up the electromagnetic compartment and a large fraction of the hadronic compartment of HGCAL and delve into the operations involved in assembling and testing these...
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Oliver Lantwin (INFN Napoli)15/05/2024, 17:00Neutrino Physics
SND@LHC is a compact stand-alone experiment to perform measurements with neutrinos produced at the LHC in a hitherto unexplored pseudo-rapidity region of 7.2 < 𝜂 < 8.6, complementary to all the other experiments at the LHC. The experiment is located 480 m downstream of IP1 in the unused TI18 tunnel. The detector is composed of a hybrid system based on an 800 kg target mass of tungsten plates,...
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Saarik Kalia (University of Minnesota)15/05/2024, 17:00Neutrino Physics
The Earth acts as a matter potential for relic neutrinos which modifies their index of refraction from vacuum by $\delta\sim10^{-8}$. It has been argued that the refractive effects from this potential should lead to a large $\mathcal O(\sqrt\delta)$ neutrino-antineutrino asymmetry at the surface of the Earth. This result was computed by treating the Earth as flat. In this talk, I revisit...
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Zhongtian Dong (University of Kansas)15/05/2024, 17:15Top Quark Physics
Top quark polarization measurements provide observables that are sensitive to new physics. The down-type fermion from the W decay is the most powerful spin analyzer from top, which is not straightforward to measure in hadronic decays. Most applications measure top quark spin via an optimal hadronic spin analyzer built from kinematics. In this talk, we discuss how to improve the optimal...
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Arthur Wu15/05/2024, 17:15Gravity & Gravitational Waves
In this talk we will be exploring a new paradigm where we establish a complementarity of Stochastic gravitational waves with the discovery of Neutral Heavy Lepton in the colliders.
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Nathan Rutherford (University of New Hampshire)15/05/2024, 17:15Dark Matter
The presence of asymmetric dark matter (ADM) in neutron star interiors has been shown to affect the global properties of neutron stars, namely their masses and radii. Since the neutron star interior is poorly understood, the most conservative approach to a Bayesian analysis of their interiors is to allow all equation of state (EoS) parameters to vary. In this work, we use synthetic neutron...
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Aidan Symons (University of Massachusetts Amherst)15/05/2024, 17:15Astro-particle Physics
Hawking radiation emitted by a black hole is typically modified in the presence of new degrees of freedom beyond the Standard Model. In this talk I will discuss the characteristics of a hypothetical observation of a black hole in its final minutes of evaporation by current and upcoming Very/Ultra High Energy Gamma Ray telescopes, such as HAWC, LHAASO, and CTA. I will then discuss the potential...
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Matt Joyce (Ohio State University (US))15/05/2024, 17:15
The FORMOSA detector at the proposed Forward Physics Facility is a scintillator-based experiment designed to search for signatures of "millicharged particles" produced in the forward region of the LHC. This talk will cover the challenges and impressive sensitivity of the FORMOSA detector, expected to extend current limits by over an order of magnitude. A pathfinder experiment, the FORMOSA...
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Camryn Sanders15/05/2024, 17:15Other BSM
We consider a Hidden Valley model which generates showering from strong dynamics within the dark sector followed by decays back into Standard Model states. Our interest is the limit of smaller dark pion masses, which create a high multiplicity of final states. The reconstruction of dark sector masses in such a setting is obscured by a thick combinatoric background. We apply the new SIFT...
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Jiayang Xiao15/05/2024, 17:15Electroweak & Higgs Physics
We present the results for NLO QED correction to the Neutral Current Drell-Yan process using jettiness subtraction method.
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The jettiness subtraction method utilizes Soft and Collinear Effective Theory (SCET) to construct the factorization theorem and relevant ingredients for the precision calculations for various processes. While the jettiness subtraction method was originally developed for... -
Ravneet Bedi (University of Minnesota)15/05/2024, 17:15Axion
We propose a solution to the strong CP problem that specifically relies on massless quarks and has no light axion. The QCD color group $SU(3)_c$ is embedded into a larger, simple gauge group (grand-color) where one of the massless, colored fermions enjoys an anomalous chiral symmetry, rendering the strong CP phase unphysical. The grand-color gauge group $G_{\rm GC}$ is Higgsed down to...
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Mayly Sanchez (Florida State University)16/05/2024, 08:30
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Carlos Arguelles (MIT)16/05/2024, 09:00
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Kevin James Kelly (Texas A&M University)16/05/2024, 09:30
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Daniel Whiteson (University of California Irvine (US))16/05/2024, 10:00
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Kiley Elizabeth Kennedy (Princeton University (US)), Mark Elsesser (American Physical Society)16/05/2024, 11:00
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David Hertzog (University of Washington), Jonathan Lee Feng (University of California Irvine (US)), Kate Scholberg, Mayly Sanchez (Florida State University), Michael Procario (US Department of Energy), Sarah Eno (University of Maryland (US)), Sven Vahsen (University of Hawaii (US)), Timothy Knight Nelson (SLAC National Accelerator Laboratory (US))16/05/2024, 11:30
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16/05/2024, 14:00
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Writasree Maitra (Washington University in St. Louis)16/05/2024, 14:00Neutrino Physics
The existence of relic neutrino background is a strong prediction of big bang cosmology. But because of their extremely small kinetic energy today, the direct detection of relic neutrinos remains elusive. On the other hand, we know very little about the nature of dark matter. In this work, we show that heavy dark matter (with mass in the range of $10^9$ to $10^{15}$ GeV) decaying into...
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Christina Gao16/05/2024, 14:00Dark Matter
Dark matter (DM) with masses of order an electronvolt or below can have a non-zero coupling to electromagnetism. In these models, the ambient DM behaves as a new classical source in Maxwell’s equations, which can excite potentially detectable electromagnetic (EM) fields in the laboratory. We describe a new proposal for using integrated photonics to search for such DM candidates with masses in...
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Ahmed Rashed (Shippensburg University of Pennsylvania)16/05/2024, 14:00Quark and Lepton Flavor Physics
We study flavor changing neutral current decays of B and K mesons in the dark U(1)D model, with the dark photon/dark Z mass between 10 MeV and 2 GeV. Although the model provides an improved fit (compared to the standard model) to the differential decay distributions of B → K(∗)
Go to contribution pagel+l−, with l = μ, e, and Bs → φμ+μ−, the allowed parameter space is ruled out by measurements of atomic parity... -
Christoph Paus (Massachusetts Inst. of Technology (US))16/05/2024, 14:00
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Wanqiang Liu16/05/2024, 14:00Quantum Information & Sensors
In the quantum simulation of lattice gauge theories, gauge symmetry can be either fixed or encoded as a redundancy of the Hilbert space. While gauge-fixing reduces the number of qubits, keeping the gauge redundancy can provide code space to mitigate and correct quantum errors by checking and restoring Gauss's law. In this work, we consider the correctable errors for generic finite gauge groups...
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Jingyu Luo (Brown University (US))16/05/2024, 14:00Other BSM
Many well-motivated beyond-the-standard-model (BSM) scenarios naturally predict the production of hadronically decaying long-lived particles (LLPs) at the LHC, which leads to displaced-jet signatures. A displaced-jet search is therefore a powerful tool to address numerous long-standing puzzles in particle physics. With the Run 3 at LHC that started from 2022, we have developed and deployed a...
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Jared Goldberg (Technion (Israel Institute of Technology))16/05/2024, 14:00Other BSM
We derive the EFT amplitudes relevant for vector-boson pair production at the LHC in the dimension-8 SMEFT using on-shell methods. Since they are directly related to physical observables, the results allow for the identification of phenomenologically interesting amplitudes, and can furthermore distinguish between the SMEFT and generic EFTs.
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Shibasis Roy (Chennai Mathematical Institute)16/05/2024, 14:15Quark and Lepton Flavor Physics
In light of the recent branching fraction measurement of $B^{+}\to K^{+}\nu\bar{\nu}$-decay and its deviation from the SM expectation, we analyze the prospect of an axion-like particle (ALP) as the cause of such a departure. We assume a long-lived ALP with a mass of the order of a pion that predominantly decays to two photons. We focus on the scenario where the ALP decay length is several...
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R. Andrew Gustafson (Virginia Tech)16/05/2024, 14:15Dark Matter
We search for indirect signals of O(keV) dark matter annihilating or decaying into O (eV) dark photons. These dark photons will be highly boosted and have decay lengths larger than the Milky Way, and can be absorbed by neutrino or dark matter experiments at a rate dependent on the photon-dark photon kinetic mixing parameter and the optical properties of the experiment. We show that current...
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Amanda Macinnis (Stony Brook University)16/05/2024, 14:15Cosmology & Dark Energy
In this talk I will present forecasts on cosmological parameters for a CMB-HD survey. These forecasts include residual foregrounds, delensing of the acoustic peaks, and DESI BAO. We find that CMB-HD can improve constraints on the scalar spectral index, n_s, by a factor of two compared to precursor surveys. We also find that the CMB-HD constraint on N_eff can rule out light thermal particles...
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Mr Samiur R. Mir (Oklahoma State University)16/05/2024, 14:15Neutrino Physics
The proposed Muon Collider Facility, when finalized, is going to offer great opportunities for discovering new physics. At high energies, muons can produce heavy neutral lepton (HNL), well-motivated beyond the Standard Model (SM) particles, which can potentially explain neutrino mass via seesaw mechanism. HNL can interact with the SM sector via transition magnetic moment, and in this talk, I...
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Bharath Sambasivam16/05/2024, 14:15Quantum Information & Sensors
The Sachdev-Ye-Kitaev (SYK) model is a fermionic model with $N$-flavors in $(0+1)$-dimensions that has holographic properties and saturates the Chaos bound in the large $N$, and low-temperature limit, where the model gains an approximate conformal symmetry. We propose an improved resource scaling $\mathcal{O}(N^5J^2t^2/\epsilon)$, and show results from noisy quantum hardware for $N=6,8$. In...
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Kirtimaan Ajaykant Mohan16/05/2024, 14:15Other BSM
We perform a comprehensive analysis of the scattering of matter and gravitational Kaluza-Klein(KK) modes in five-dimensional gravity theories. We consider matter localized on a brane as well as in the bulk of the extra dimension for scalars, fermions and vectors respectively, and consider an arbitrary warped background. While naive power-counting suggests that there are amplitudes which grow...
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Daniel Guerrero (Fermi National Accelerator Lab. (US))16/05/2024, 14:15Other BSM
Many scenarios beyond the standard model hypothesize the existence of new particles with long lifetimes. These long-lived particles (LLPs) decay significantly displaced from their initial production vertex, leading to unconventional signatures within the detector. This presentation focuses on searches with LLP decays within the CMS muon system. An innovative usage of the CMS muon detectors is...
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Srini Rajagopalan (Brookhaven National Laboratory (US))16/05/2024, 14:26
The proposed next generation e+e- colliders provide an excellent opportunity for precision measurements of the electroweak and the Higgs sector that offer both direct and indirect probes of new physics beyond the Standard Model. These opportunities can be enabled by deploying low-mass, high granularity detectors, utilizing the latest state-of-the-art technological developments, that can offer...
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Noshin Tabassum16/05/2024, 14:30Quantum Information & Sensors
A significant challenge in the detection of meV-scale rare events is demonstrating sufficiently low energy detection thresholds in order to detect recoils from light dark matter particles. Many detector concepts have been proposed to achieve this goal, which often include novel detector target media or sensor technology. A universal challenge in understanding the signals from these new...
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Aditya Gadam16/05/2024, 14:30Quark and Lepton Flavor Physics
Highly suppressed (Rare) $b$-quark processes provide an excellent probe into heavy New Physics (NP) scenarios in conjunction with stringent tests of the Standard Model (SM). Rare decays of the form $b \rightarrow s \nu \bar{\nu}$ appear in the $\Lambda_b \rightarrow \Lambda \nu \bar{\nu}$ channel, that has not yet been observed, but is a promising avenue of exploration at future $e^+e^-$...
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Xing Wang (UC San Diego)16/05/2024, 14:30Other BSM
In this talk, I will discuss how the residual five-dimensional diffeomorphism symmetries of compactified gravitational theories with a warped extra dimension imply Equivalence theorems which ensure that the scattering amplitudes of helicity-0 and helicity-1 spin-2 Kaluza-Klein states equal (to leading order in scattering energy) those of the corresponding Goldstone bosons present in the...
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Yulun Li16/05/2024, 14:30Neutrino Physics
We investigate the decay of MeV-scale sterile Dirac neutrinos into e+e- pairs, which is a signature that can be exploited by current solar neutrino experiments (e.g. Borexino) and future dark matter experiments (e.g. ISODAR@Yemilab) to set limits in mass-mixing parameter space. We present a closed-formed decay width correctly accounting for the neutral/charged current interference. We rederive...
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Ariel Amsellem16/05/2024, 14:30Cosmology & Dark Energy
The primary two methods for measuring the Hubble constant – forward modeling of CMB fluctuations and distance ladder measurements – disagree at a level that is statistically significant. A third method, known as the bright standard siren method, could add another competitive measurement to the fray, potentially pointing to a resolution of the aforementioned tension. This direct method...
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K.K. Gan (The Ohio State University (US))16/05/2024, 14:30Other BSM
A search for long-lived particles decaying into an oppositely charged lepton pair, mumu, ee, emu, is presented with a requirement that candidate leptons form a vertex within the inner tracking volume of ATLAS, displaced from the primary pp interaction region. The analysis uses the 140 fb^-1 of Run II data collected at 13 TeV by the ATLAS Experiment in 2015-2018. The results of the analysis are...
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Dr Michele Lucente (University of Bologna)16/05/2024, 14:30Dark Matter
I will present a detailed study of the production of dark matter in the form of a sterile neutrino via freeze-in from decays of heavy right-handed neutrinos. Our treatment accounts for thermal effects in the effective couplings, generated via neutrino mixing, of the new heavy neutrinos with the Standard Model gauge and Higgs bosons and can be applied to several low-energy fermion seesaw...
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16/05/2024, 14:45
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Daven Wei Ren Ho16/05/2024, 14:45Cosmology & Dark Energy
The peaks of the CMB spectra provide a direct cosmological probe for studying dark sector physics. Specifically, a shift in the peak positions corresponds to a phase shift in the acoustic oscillations of the photon-baryon plasma before recombination, which is sensitive to the propagation behavior of non-photon radiation. It has been established that CMB spectra shift to higher l-modes if the...
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Alexandre Jean (Université de Montréal)16/05/2024, 14:45Quark and Lepton Flavor Physics
The amplitudes of $B\rightarrow PP$ decays, where $P$ is a pion or a kaon, are related by flavour $SU(3)$ ($SU(3)_F$). This allows us to describe all observables for these decays in terms of $SU(3)_F$ reduced matrix elements parametrized by diagrams. Using these parameters, we performed a fit to the experimental data, and found a discrepancy at the level of 3.6$\sigma$. This discrepancy can be...
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Barmak Shams Es Haghi (University of Texas at Austin)16/05/2024, 14:45Dark Matter
We present a novel perspective on the role of inflation in the production of Dark Matter (DM). Specifically, we explore the DM production during Warm Inflation via ultraviolet Freeze-In (WIFI). We demonstrate that in a Warm Inflation (WI) setting the persistent thermal bath, sustained by the dissipative interactions with the inflaton field, can source a sizable DM abundance via the...
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Rikab Gambhir (MIT)16/05/2024, 14:45Other BSM
As the field examines a future muon collider as a possible successor to the LHC, we must consider how to fully utilize not only the high-energy particle collisions, but also any lower-energy staging facilities necessary in the R&D process. An economical and efficient possibility is to use the accelerated muon beam from either the full experiment or from cooling and acceleration tests in...
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Gowri Sundaresan16/05/2024, 14:45Other BSM
The most general massless particles allowed by Poincare' invariance are “continuous spin” particles (CSPs), a term coined by Wigner. Such particles are notable for their integer-spaced infinite tower of spin polarizations, with states of different integer (or half-integer) helicities mixing under boosts, much like the spin-states of a massive particle. The mixing under boosts is controlled by...
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Dr Toni Makela (NCBJ)16/05/2024, 14:45Neutrino Physics
The initiation of a novel neutrino physics program at the Large Hadron Collider (LHC) motivates studying the discovery potential of existing and proposed forward neutrino experiments. This requires resolving degeneracies between new predictions and uncertainties in modeling neutrino production in the forward kinematic region. Based on a broad selection of predictions for the parent hadron...
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Jan Strube16/05/2024, 14:52
The International Linear Collider is proposed e+e- collider with a staged approach to reach high energies. The accelerator is based on a mature design that can deliver high luminosity and uses polarized beams. The first stage will be a Higgs Factory, with collisions at 250 GeV that allows measurements of Higgs boson couplings comparable to that of circular e+e- colliders.
A second stage...
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Ameen Ismail16/05/2024, 15:00Other BSM
Energy correlators are useful observables for studying quantum chromodynamics (QCD). In particular, the two-point energy correlator offers a clean visualization of the confinement transition. I will present a calculation of the two-point correlator in the simplest holographic model of confinement, based on a warped extra dimension with an IR brane. This is the first AdS/CFT computation of...
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Michael Shamma (TRIUMF)16/05/2024, 15:00Dark Matter
Most scenarios of Majorana Leptogenesis require on-shell production of heavy Majorana neutrinos, $N$ whose CP-violating decays give rise to a lepton asymmetry. This lepton asymmetry is then converted into the observed baryon asymmetry by sphalerons. In this talk, I will discuss the possibility of simultaneously generating dark and Standard Model lepton asymmetries when the universe reheats to...
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Digesh Raut16/05/2024, 15:00Other BSM
We consider the non-minimal quartic inflation driven by the U(1)$_X$ Higgs field $\phi$ in classically conformal U(1)$_X$ extended Standard Model (SM). Since the conformal symmetry is broken radiatively, the U(1)$_X$ gauge boson mass $m_{Z^\prime}$, the U(1)$_X$ gauge coupling $g_X$, and the inflationary predictions for tensor-to-scaler ratio $r$ are determined by only two free parameters, the...
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W.L. Kimmy Wu (SLAC National Accelerator Laboratory)16/05/2024, 15:00Cosmology & Dark Energy
Gravitational lensing of the cosmic microwave background (CMB) encodes information from the low-redshift universe. Therefore, its measurement is useful for constraining cosmological parameters that describe structure formation, e.g. matter density ($\Omega_m$), the amplitude of clustering ($\sigma_8$), and the sum of neutrino masses. In this talk, I will first present cosmological results from...
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Diego Lopez Gutierrez16/05/2024, 15:00Neutrino Physics
The neutrino trident process is where a neutrino scatters off nuclei and produces a lepton pair. Most trident studies have focused on electron and muon production as they represent the most likely source of trident events in the Standard Model (SM). We analyze the possibility of detecting tau leptons from SM trident processes at the DUNE near detector. The detection of tau leptons at the DUNE...
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Alex Daniel Fernez (University of Maryland (US))16/05/2024, 15:00Quark and Lepton Flavor Physics
Evidence for an excess of b -> c tau nu decays, indicative of a violation of Lepton Flavor Universality (LFU), was first experimentally observed in a 2012 analysis at BaBar measuring the ratio quantities R(D()) = BF(B -> D() tau nu) / BF(B -> D(*) l nu) (l=mu,e). More results followed from the B factories supporting this anomaly, and were later joined by LHCb, which boasts a larger...
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Nicholas Pinto (Johns Hopkins University (US))16/05/2024, 15:04
Prospects to constrain CP-odd contributions in the Higgs-strahlung process at a future electron-positron collider for the process e+e- => ZH are presented. A realistic study is performed in the framework of the FCC-ee collider at the center-of-mass energy of 240 GeV, with reconstruction of the IDEA detector performed using the DELPHES framework. A matrix-element package, MELA, is implemented...
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16/05/2024, 15:15
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Swapnil Dutta16/05/2024, 15:15Dark Matter
In this talk, we look at some consequences of Majorons in the singlet Majoron model. We explore a scenario where the Majoron acts as Dark matter, while simultaneously baryon asymmetry being generated through leptogenesis, and Neutrino masses generated through type I seesaw mechanism. We explore the consequences of Majoron freeze-in production through a relatively unexplored channel of...
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Katherine Schwind (The Ohio State University)16/05/2024, 15:15Other BSM
Color-sextet scalars have well-known renormalizable couplings to quark pairs, but they could have an array of other possible couplings to the Standard Model. This talk will focus on proposed LHC searches for two operators of mass dimension six which include these sextet scalars. The first of these operators involves color-sextet scalars in a channel with jets and a hard opposite-sign lepton...
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Anubhav Mathur (Johns Hopkins University)16/05/2024, 15:15Axion
Even if they do not comprise the dark matter, light axion-like particles may be sourced by bulk Standard Model matter through a coupling that violates CP. When considered in combination with the usual axion-photon coupling, the resulting 'monopole-dipole' scenario possesses a rich phenomenology, as has previously been studied in the context of terrestrial detection. In this talk, I discuss the...
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Misa Toman16/05/2024, 15:15Other BSM
The ForwArd Search ExpeRiment (FASER) searches for dark photons that are produced in the decays of neutral pions and eta mesons and decay into fermion-antifermion pairs. Dark photons are massive gauge bosons of broken $U(1)_D$ symmetry, presenting a remarkably simple extension to the standard model. Previous analyses have neglected spin correlations in signal event generation; however, because...
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Prof. Seodong Shin (Jeonbuk National University)16/05/2024, 15:15Neutrino Physics
In this talk, I would like to investigate the excellent potential of future tau neutrino experiments in probing non-standard interactions and secret interactions of neutrinos. Due to its ability identifying tau lepton, DUNE far detector could have superior sensitivity in probing the secret neutrino interactions by observing downward-going atmospheric neutrinos, compared to the short-baseline...
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Kevin Langhoff (UC Berkeley)16/05/2024, 15:16Other BSM
We show that the FCC-ee will have sensitivity to the MSSM electroweak sector that is complementary to the LHC, through the precision Z-boson measurements. Our results provide added motivation and quantitative targets for the desired systematic uncertainty on this measurement.
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Evan Petrosky16/05/2024, 16:00Dark Matter
For many years, models of weakly interacting massive particles (WIMPs) have been a useful target for direct detection experiments and other probes of dark matter. However, increasingly precise experimental probes have severely constrained the viable parameter space for these models. In this talk, I will review a paradigmatic WIMP model, Singlet-Doublet dark matter. I will introduce the...
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Afif Omar16/05/2024, 16:00Cosmology & Dark Energy
We study the impact of an early dark energy component (EDE) present during big bang nucleosynthesis (BBN) on the elemental abundances of deuterium (D/H), and helium ($Y_p$), as well as the effective relativistic degrees of freedom $N_{\rm eff}$. We consider a simple model of EDE that is constant up to a critical temperature. After the critical temperature, the EDE decays as either standard...
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Seth Koren (University of Notre Dame)16/05/2024, 16:00Quantum Field & String Theory
Generalized global symmetries are present in theories of particle physics, and understanding their structure can give insight into these theories and UV completions thereof. We will identify non-invertible chiral symmetries in certain flavorful Z' extensions of the Standard Model, and this will lead us to interesting nonperturbative effects in theories of gauged non-Abelian flavor. For the...
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Kunfeng Lyu (University of Minnesota)16/05/2024, 16:00Electroweak & Higgs Physics
We propose a novel method using the ZZ-fusion channel and forward muon detection at high-energy muon colliders to address the challenge of the Higgs couplingwidth degeneracy. Our approach enables inclusive Higgs rate measurement to 0.75%
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at 10 TeV muon collider, breaking the coupling-width degeneracy. Results indicate
the potential to refine Higgs coupling to sub-percent levels and estimate... -
Nikolaos Kidonakis16/05/2024, 16:00Top Quark Physics
We present higher-order QCD corrections for the associated production of a top-antitop quark pair and a $W$ boson ($t{\bar t}W$ production). We calculate approximate NNLO (aNNLO) and approximate N$^3$LO (aN$^3$LO) cross sections, with second-order and third-order soft-gluon corrections added to the exact NLO QCD result, and we also include electroweak (EW) corrections through NLO. We compare...
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Cash Hauptmann16/05/2024, 16:00Other BSM
Any particle physics model exhibiting symmetry breaking is necessarily accompanied by a phase transition taking the particle content of the universe from its initially symmetric phase to one where the underlying gauge symmetry is “broken”. First-order phase transitions (FOPTs) are characterized by the rapid expansion of bubbles containing the new broken phase, which nucleate stochastically...
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Abraham Meles Teklu (Stony Brook University (US))16/05/2024, 16:00Neutrino Physics
The newly Upgraded Near Detector of the T2K experiment includes a novel 3D-projection tracker called Super Fine-Grained Detector (SFGD) sandwiched between two Time Projection Chambers equipped with resistive MicroMegas. The primary goal of the upgraded near detector is to reduce systematic uncertainties associated with neutrino flux and cross-section models for future studies of neutrino...
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Yitian Sun16/05/2024, 16:00Astro-particle Physics
The 21-cm signal provides a novel avenue to measure the thermal state of the universe during cosmic dawn and reionization, and thus a probe of exotic energy injection such as those from decaying or annihilating dark matter (DM). These DM processes are inherently inhomogeneous: both decay and annihilation are density dependent, and furthermore the fraction of injected energy that is deposited...
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Leo Rozanov16/05/2024, 16:00Other BSM
This study investigates a detector designed for a 10 TeV Muon Collider, a proposed next-generation facility. With the target luminosity of 10 ab$^{−1}$, this facility would enable direct searches for compelling Beyond the Standard Model (BSM) scenarios as well as precision measurements of Standard Model properties. We study the impact of beam-induced background (BIB), a unique aspect of Muon...
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Sofia Corbà (University of Massachusetts Amherst)16/05/2024, 16:15Cosmology & Dark Energy
The scalar and tensor fluctuations produced during inflation can be correlated, if arising from the same underlying mechanism. We investigate such correlation in the model of axion inflation, where the rolling inflaton produces quanta of a $U(1)$ gauge field which, in turn, source scalar and tensor fluctuations. We compute the primordial correlator of the curvature perturbation, $\zeta$, with...
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Xiuyuan Zhang16/05/2024, 16:15Astro-particle Physics
The polarization of light from various astrophysical sources could serve as a probe of new physics, including axion-like particles (ALPs). Previously most observational and theoretical studies of such polarization signals have focused on photon energies below the MeV scale, although there are studies of the effect of ALPs on photon intensity at the GeV scale. Extending the studies of...
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Andreas Werner Jung (Purdue University (US))16/05/2024, 16:15Top Quark Physics
Entanglement is an intrinsic property of quantum mechanics and its measurement probes the current understanding of the underlying quantum nature of elementary particles at a fundamental level. A measurement of the extent of entanglement in top quark and top antiquark events produced in proton-proton collisions at a center-of-mass energy of 13 TeV is presented. The events are selected based on...
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Manuel Szewc16/05/2024, 16:15Electroweak & Higgs Physics
In this talk we detail how combining recent developments in flavor-tagging and novel statistical analysis techniques will allow future high energy and high statistics electron-positron colliders, such as the FCC-ee, to place phenomenologically relevant bounds on flavor violating Higgs and Z decays to quarks. As a proof of principle, we assess the FCC-ee reach for Z/h → bs, cu decays as a...
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Nathan Herring (Hillsdale College)16/05/2024, 16:15Quantum Field & String Theory
We critically examine the applicability of the effective potential within dynamical situations, as it is often used in phenomenological models, and find in short, that the answer is negative. An important caveat of the use of an effective potential in dynamical equations of motion is an explicit violation of energy conservation.
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We introduce an adiabatic effective potential in a consistent... -
Anil Thapa (University of Virginia)16/05/2024, 16:15Other BSM
We develop a grand unified theory of matter and forces based on the gauge symmetry $SU(5)_L\times SU(5)_R$ with parity interchanging the two factor groups. Our main motivation for such a construction is to realize a minimal GUT embedding of left-right symmetric models that provide a parity solution to the strong CP problem without the axion. We show how the gauge couplings unify with an...
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Dr Barnali Chowdhury (ANL)16/05/2024, 16:15Computing, Analysis Tools and Data Handling
The Deep Underground Neutrino Experiment (DUNE), hosted by the U.S. Department of Energy’s Fermilab, is expected to begin operations in the late 2020s. The primary physics goals of the experiment include studying neutrino oscillations, detecting and measuring the νe flux from supernova bursts, and searching for physics beyond the Standard Model. In preparation of DUNE, we are building...
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Xiaohe Shen (Brown University (US))16/05/2024, 16:15Other BSM
Vector-like quarks (VLQs) are hypothetical particles that may lead to new physics phenomena, resolving the hierarchy problem. This talk presents a search for vector-like B quarks decaying into a top quark and a W boson, using the full CMS Run 2 proton-proton collision data at √s=13 TeV. The search targets single-lepton final states that contain one well-reconstructed muon or electron. The mass...
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Abd El Aziz Hussein (Massachusetts Institute of Technology)16/05/2024, 16:15Dark Matter
Understanding the dark matter distribution within a few kpc of the galactic center of the Milky Way is essential in estimating the dark matter content of the galaxy for indirect detection experiments, as well as understanding the particle nature of dark matter through the density profile in the Milky Way’s core. Although it is difficult to accurately measure the inner stellar distribution in...
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16/05/2024, 16:30
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Yue Feng16/05/2024, 16:30Neutrino Physics
The Accelerator Neutrino Neutron Interaction Experiment (ANNIE) is a 26-ton water Cherenkov experiment with the Large Area Picosecond Photodetector (LAPPD), operating on the Booster Neutrino Beamline at Fermilab. ANNIE aims to measure the neutron yield from neutrino-nucleus interactions as a function of lepton kinematics to reduce systematic uncertainties in future long baseline neutrino...
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Dr TaeHun Kim (KIAS)16/05/2024, 16:30Cosmology & Dark Energy
A thermal interpretation of the stochastic formalism of a slow-rolling scalar field in a de Sitter (dS) universe is given. We construct a correspondence between causal patches in the 3-dimensional space of a dS universe and particles living in an abstract space. By assuming a dual description of scalar fields and classical mechanics in the abstract space, we show that the stochastic evolution...
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Margarita Gavrilova (Cornell)16/05/2024, 16:30Quark and Lepton Flavor Physics
It is standard to treat the up, down, and strange quarks as "light" (non-perturbative), while the charm, bottom, and top quarks are considered "heavy" (perturbative). However, this is a somewhat simplistic picture. As I will argue in my talk, charm exhibits hints of significant rescattering effects, which is a sign of the importance of non-perturbative QCD. To make my point, I propose a...
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Pierce Giffin16/05/2024, 16:30Dark Matter
Historically, dark matter searches have primarily focused on hunting for effects from two-to-two scattering. However, given that the visible universe is primarily composed of plasmas governed by collective effects, there is great potential to explore similar effects in the dark sector. Recent semi-analytic work has shown that new areas of parameter space for dark U(1) models can be probed...
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Tao Xu (The University of Oklahoma)16/05/2024, 16:30Astro-particle Physics
Superradiance provides a unique opportunity for investigating dark sectors as well as primordial black holes (PBHs), which themselves are candidates for dark matter (DM) over a wide mass range. Using axion-like particles (ALPs) as an example, we show that line signals emerging from a superradiated ALP cloud combined with Hawking radiation from PBHs, along with microlensing observations lead to...
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Shuyang Cao (University of Pittsburgh)16/05/2024, 16:30Dark Matter
We study the dynamics of particle mixing induced by their coupling to a common intermediate state or decay channel, which is of broad fundamental interest within the context of CP violation and/or baryogenesis. Field mixing may also be a consequence of “portals”, connecting standard model degrees of freedom to hypothetical ones via mediator particles beyond the standard model. An effective...
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Roshan Mammen Abraham (University of California Irvine (US))16/05/2024, 16:30Other BSM
The recent observation of collider neutrinos and BSM searches by the FASER collaboration highlights the potential the forward direction at the LHC has for neutrino and BSM physics. But in these studies, the dominant background comes from muons and significant effort goes into suppressing them. In this work, we describe efforts to use these “background” muons to study muon-philic particles. In...
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Krzysztof Mekala16/05/2024, 16:30Electroweak & Higgs Physics
Electroweak Precision Measurements are stringent tests of the Standard Model and sensitive probes to New Physics. Accurate studies of the Z-boson couplings to the first-generation quarks could reveal potential discrepancies between the fundamental theory and experimental data. Future e+e- colliders running at the Z pole and around the ZH threshold would be an excellent tool to perform such a...
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Timothy Martonhelyi (University of Massachusetts Amherst)16/05/2024, 16:45Other BSM
Novel heavy vector resonances are a common prediction of theories beyond the Standard Model, and the framework of simplified models provides a phenomenological bridge between these theories and the experimental limits obtained at colliders. In this talk I will introduce a simplified model for two colorless heavy vector resonances in the singlet representation of $SU(2)_L$, with zero and unit...
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Shi Yan (Brown University)16/05/2024, 16:45Astro-particle Physics
The Jovian magnetic field, being the strongest and largest planetary one in the solar system, could offer us new insights into possible microscopic scale new physics, such as a non-zero mass of the Standard Model (SM) photon or a light dark photon kinetically mixing with the SM photon. We employ the immense data set from the latest Juno mission, which provides us unprecedented information...
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Ricardo Escobar Franco (University of Illinois at Chicago (US))16/05/2024, 16:45Top Quark Physics
The measurement of the charge asymmetry in top-antiquark pairs is presented using data collected by the CMS detector with proton-proton collisions and center of mass energy of 13 TeV. The full Run 2 data is used, corresponding to an integrated luminosity of 138 $fb^{-1}$. Events with exactly one lepton (an electron or muon), at least two jets and missing transverse energy are considered. The...
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Ishmam Mahbub (University of Minnesota Twin Cities)16/05/2024, 16:45Quantum Field & String Theory
We construct tree-level amplitude for massive particles using on-shell recursion relations based on two classes of momentum shifts: an all-line transverse shift that deforms momentum by its transverse polarization vector, and a massive BCFW-type shift. We illustrate that these shifts allow us to correctly calculate four-point and five-point amplitudes in massive QED, without an ambiguity...
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Taegyu Lee (Indiana University)16/05/2024, 16:45Electroweak & Higgs Physics
SMEFT is an efficient tool to parametrize the effect of BSM physics in a model-independent way. We study di-Higgs and tri-Higgs productions at the muon collider which is parametrized by the dimension 6 mass operator. We also study di-boson and tri-boson processes which also include the production of Goldstone bosons. We discuss possible model dependence of multi-boson processes resulting from...
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Aparajitha Karthikeyan (Department of Physics and Astronomy, Texas A&M University)16/05/2024, 16:45Other BSM
We explore the possibility of probing new physics particles that scatter into visible particles at DarkQuest, such as neutrino tridents, Bethe-Heitler scattering, etc. The DarkQuest setup consists of a 120 GeV proton beam that impinges on a 5 m iron block with the detector placed 25 m away from the proton source. We find that the closeness of the detector to this high-energy proton source is...
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Mr POOI SEONG CHONG (University of Pennsylvania)16/05/2024, 16:45Neutrino Physics
The T2K collaboration is currently upgrading the near detector for the experiment. The upgraded near detector include the Super Fine Grained Detector (SuperFGD) which is a 3D scintillator tracker and serves as the primary target for neutrino interactions. The SuperFGD is sandwiched by two time-projection chambers (HA-TPC) and the three detectors are then enclosed by time-of-flight detectors...
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Eric Putney (Rutgers, The State University of New Jersey)16/05/2024, 16:45Dark Matter
Observations of stellar populations are biased by extinction from foreground dust. By solving the equilibrium collisionless Boltzmann equation using machine learning techniques, one can estimate the unbiased phase space density of an equilibrated stellar population and the underlying gravitational potential. Using a normalizing flow-based estimate for the phase space density of stars measured...
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He Li16/05/2024, 16:45Cosmology & Dark Energy
The interplay between cosmology and strongly coupled dynamics can yield transient features that vanish at late times of cosmic evolution, but which may leave behind phenomenological signatures in the spectrum of primordial fluctuations and cosmological observables. Of particular interest are strongly coupled extensions of the standard model featuring approximate conformal invariance. In flat...
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16/05/2024, 17:00
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16/05/2024, 17:00
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Zhewei Yin16/05/2024, 17:00Quantum Field & String Theory
We show in a very general setup that the linear entropy for the entanglement of a final state, resulting from a quantum 2 to 2 scattering of unentangled initial states in the plane wave limit, is twice of the scattering probability for certain outcomes. In particular, the entropy can be expressed as proportional to some scattering cross section, divided by an area that characterizes the spread...
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445. Assessing the Impact of Likelihood-Based Inference Techniques on Galactic Center Excess StudiesYunha Lee16/05/2024, 17:00Astro-particle Physics
A significant excess of gamma-rays has been detected by the Fermi-LAT space telescope in the direction of the Galactic center, yet its origin remains uncertain. The Galactic center excess (GCE) can be explained as a signal of annihilating dark matter or emissions from point sources such as unresolved millisecond pulsars. In principle, these hypotheses can be distinguished with likelihood based...
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Guglielmo Papiri (Cornell University)16/05/2024, 17:00Quark and Lepton Flavor Physics
It is known that kaon CP-violation could manifest itself in decays into neutral kaons. In particular, the CP asymmetry in $\tau\rightarrow \pi K_s \nu$ had been searched for. In this work we discuss how the measured time integrated CP asymmetry depends on the experimental detection efficiency as a function of the energy and the decay time of the kaon. We show that such dependencies of the...
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Joshua Forsyth16/05/2024, 17:00Other BSM
Quirks are particles with interesting dynamics that appear in several motivated extensions of the Standard Model. Quirky bound states associated with Higgs naturalness may be copiously produced at the LHC. So far, however, collider bounds may be as weak as a few hundred GeV. I show how bound states of this type can be found using the displaced decays of hidden sector glueballs, significantly...
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Matthew Gar Jun Man (University of Toronto (CA))16/05/2024, 17:00Computing, Analysis Tools and Data Handling
The Deep Underground Neutrino Experiment (DUNE) is a next-generation long-baseline neutrino experiment currently under construction in the US. The experiment consists of a broadband neutrino beam from Fermilab to the Sanford Underground Research Facility (SURF) in Lead, South Dakota, a high-precision near detector, and a large liquid argon time-projection chamber (LArTPC) far detector. The...
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Zhi Zheng (SLAC National Accelerator Laboratory (US))16/05/2024, 17:00Electroweak & Higgs Physics
The study of Higgs boson production at large transverse momentum is one of the new frontiers for the LHC Higgs physics program. This talk will present the first measurement of Higgs boson production in association with a vector boson in the full hadronic qqbb final state using data recored by the ATLAS detector at the LHC in pp collision at 13 TeV and corresponding to an integrated luminosity...
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Ian Holst16/05/2024, 17:00Cosmology & Dark Energy
If enough primordial black holes (PBH) are produced in the early Universe, they can come to dominate its energy density. This is usually considered viable as long as the PBHs evaporate and reheat the universe above the temperature needed for Big Bang nucleosynthesis, which requires $m_\mathrm{BH} \lesssim 10^9$ g. However, during this period of early matter domination, perturbations can grow...
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16/05/2024, 17:15
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Keisuke Inomata (Jonhs Hopkins University)16/05/2024, 17:15Cosmology & Dark Energy
I examine one-loop corrections from small-scale curvature perturbations to the superhorizon-limit ones in single-field inflation models, which have recently caused controversy. I consider the case where the Universe experiences transitions of slow-roll (SR) → intermediate period → SR. The intermediate period can be an ultra-slow-roll period or a resonant amplification period, either of which...
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Bathiya Samarakoon (Wichita State University)16/05/2024, 17:15Other BSM
Double Higgs production plays a crucial role in assessing the Higgs self-coupling (trilinear Higgs coupling), which is responsible for endowing elementary particles with mass and shaping the Higgs potential. Measuring the trilinear Higgs coupling at proton colliders necessitates high luminosity due to the rarity of processes involving it in the Standard Model. Nonetheless, muon colliders offer...
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Walt Perkins16/05/2024, 17:15Quantum Field & String Theory
Experiments conducted in the late 1950s and early 1960s provided compelling evidence that pions and kaons possess directional properties, challenging their traditional classification as pseudoscalar particles. In particular, four of these experiments, performed by four distinct research groups, each reported deviations exceeding five standard deviations from the expected result for...
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Jackie Lodman (Harvard University)16/05/2024, 17:15Electroweak & Higgs Physics
We examine the possibility of using muon colliders to make complementary measurements if a non-zero electron EDM is observed in future experiments. All particles that couple to electroweak gauge bosons and the Higgs will contribute to leptonic EDMs through Barr-Zee diagrams, at the 2-loop level. These diagrams have analogous contributions to vector boson fusion present at muon colliders. We...
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Ting Gao (University of Minnesota)16/05/2024, 17:15Quark and Lepton Flavor Physics
We revisit the behavior of neutron interpolating currents under singlet chiral rotations and show that not all interpolating currents are good for calculating chirality-sensitive quantities. In particular, for the $\theta$-induced neutron EDM, we show that the $\beta=1$ and $\beta=-1$ current give physical answers that only depend on $\bar{\theta}=\theta_m+\theta_G$ after removing an overall...
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Mr Haowei Zheng (Stony Brook University)16/05/2024, 17:15Neutrino Physics
Long-baseline neutrino oscillation experiments rely on detailed models of neutrino interactions on nuclei. These models constitute an important source of systematic uncertainty, partially because detectors to date have been blind to final state neutrons. Three-dimensional projection scintillator trackers comprise components of the near detector of the next generation long-baseline neutrino...
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Valentina Dutta (Carnegie-Mellon University (US))17/05/2024, 08:30
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Erin Hansen (Drexel University), Julie Hogan (Brown University, Bethel University (US)), Sudhir Malik (University of Puerto Rico (US)), Tulika Bose (University of Wisconsin Madison (US))17/05/2024, 09:00
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Ethan Neil (University of Colorado Boulder)17/05/2024, 10:00
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Jure Zupan (University of Cincinnati)17/05/2024, 11:00
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Aram Apyan (Brandeis University (US))17/05/2024, 11:30
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David Saltzberg (University of California Los Angeles (US))17/05/2024, 12:00
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Tao Han17/05/2024, 12:30
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Umar Sohail Qureshi (Vanderbilt University)Computing, Analysis Tools and Data Handling
Monte Carlo event generators that simulate particle-particle collisions are an integral part of high-energy particle and nuclear physics. Physics processes implemented in the aforementioned event generators often include multiple parameters which are turned to experimental measurements. While the global tuning of the $\texttt{Herwig7}$ Monte Carlo event generator is in good agreement with data...
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Thomas Gehrman (University of Oklahoma)Astro-particle Physics
Axions are favored as a possible dark matter candidate. They can be produced in large quantities in stellar environments and have non-trivial effects on stellar evolution. Cepheid variables are particularly sensitive to axion production: the Cepheid blue loop stages can be eliminated if the axion coupling to Standard Model particles is strong enough and axions are produced copiously. This has...
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Dr Purushottam Sahu (Indian Institute Of Technology Bombay, India)Neutrino Physics
We study the link between low-scale CP-violating Dirac phase $(\delta)$ and high-scale leptogenesis in a Left-Right Symmetric Model (LRSM) with scalar bidoublet and doublets. The model's fermion sector includes one sterile neutrino $(S_L)$ for each generation, resulting in a double seesaw mechanism in the neutral fermion mass matrix. The double seesaw is achieved by implementing the type-I...
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Deyan Mihaylov (Case Western Reserve University)Cosmology & Dark Energy
Cosmic microwave background anisotropies have proven to be the most powerful probe of non-trivial topology of the Universe. Within ΛCDM, these anisotropies have well-characterized statistical properties, the signal is principally from a thin spherical shell centered on the observer (the last scattering surface). The most generic signature of cosmic topology in the microwave background is pairs...
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Yu-Dai Tsai (University of California, Irvine)Cosmology & Dark Energy
We demonstrate that the searches for dark sector particles can provide probes of reheating scenarios, focusing on the cosmic millicharge background produced in the early universe. We discuss two types of millicharge particles (mCPs): either with, or without, an accompanying dark photon. These two types of mCPs have distinct theoretical motivations and cosmological signatures. We discuss...
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Elliot Lipeles (University of Pennsylvania (US))Dark Matter
There is strong evidence for dark matter in a variety of astrophysical observations. A new as yet unknown particle is a leading candidate for dark matter. This talk will review searches for the production of a dark matter particle or potential dark matter mediators in accelerator experiments. Indirect searches in astrophysical annihilation will also be addressed.
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Xiuyuan ZhangDark Matter
Lambda cold dark matter ($\Lambda$CDM) is widely considered as the standard model of the Big Bang cosmology that contains a postulated new particle called dark matter (DM), which makes up for 85% of the matter of the universe. However, DM has yet to be detected non gravitationally. One of the major ways of probing it is through direct detection experiments measuring the cross section of dark...
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Matias Nahuel Mantinan (University of Chicago (US))Dark Matter
A study is performed to look for signals of a strongly coupled dark sector. Many dark matter experiments have searched for weakly interacting particles without success. Hidden valley models with a strongly coupled dark sector can offer an alternative dark matter candidate, and may have evaded previous searches. We consider such a dark-QCD sector with a Standard Model Higgs mediator....
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Dr Joshua Eby (Kavli IPMU), Yu-Dai Tsai (University of California, Irvine)Dark Matter
Recent advances in quantum sensors, including atomic clocks, enable searches for a broad range of dark matter candidates. The question of the dark matter distribution in the Solar system critically affects the reach of dark matter direct detection experiments. Partly motivated by the NASA Deep Space Atomic Clock (DSAC), we show that space quantum sensors present new opportunities for...
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Tao Xu (The University of Oklahoma)Other BSM
Leptogenesis can provide solutions to the baryon asymmetry of the Universe (BAU) and explain the origin of mass for SM neutrinos. In the framework of conventional thermal leptogenesis, a major obstacle arises from the strong washout effects. The final BAU is a competition between the asymmetric decay of right-handed neutrinos (RHNs) and the washout of the existing asymmetry. In this talk, I...
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Suchismita SahooDark Matter
We investigate the phenomenology of light GeV-scale fermionic dark matter in $U(1)_{L_\mu - L_{\tau}}$ gauge extension of the Standard Model. Heavy neutral fermions alongside with a $S_1(\overline{3}$,$1$,$1/3$) scalar leptoquark and an inert scalar doublet are added to address the flavor anomalies and light neutrino mass respectively. The light gauge boson associated with...
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Ryan Plestid
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Drona VatsyayanOther BSM
The unique dimension-5 effective operator, $LLHH$, known as the Weinberg operator, generates tiny Majorana masses for neutrinos after electroweak spontaneous symmetry breaking. If there are new scalar multiplets that take vacuum expectation values (VEVs), they should not be far from the electroweak scale. Consequently, they may generate new dimension-5 Weinberg-like operators which in turn...
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Fazlollah Hajkarim (University of Oklahoma)Axion
We derive new constraints on axion-like particles (ALPs) using precision $X$-ray polarization studies of magnetars. Specifically, we use the first detection of polarized $X$-rays from the magnetars 4U 0142+61 and 1RXS J170849.0-400910 by the Imaging $X$-ray Polarimetry Explorer (IXPE) to place bounds on the product of the ALP-photon and ALP-nucleon couplings, $g_{a\gamma}g_{aN}$, with...
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Ming-Shau Liu (University of Cambridge)Dark Matter
We study non-composite dark matter as a beyond the Standard Model (BSM) extension under the Higgs Effective Field Theory (HEFT) framework, which describes necessarily non-linearly realised theories perturbed around the ground state after electroweak symmetry breaking (EWSB). We focus on scalar Loryon models that acquire more than half the particle's mass from the Higgs mechanism and found four...
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Ornella Palamara (Fermilab)
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Anthony Badea (University of Chicago (US))Instrumentation
The instantaneous luminosity of the Large Hadron Collider at CERN will be increased by about a factor of five with respect to the design value by undergoing an extensive upgrade program over the coming decade. The largest phase-1 upgrade project for the ATLAS Muon System was the replacement of the first station in the forward regions with the New Small Wheels (NSWs) which took place during the...
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Yannis GeorisCosmology & Dark Energy
The effective number of neutrinos, $N_{\rm eff}$, is an important parameter in standard hot big bang cosmology. In this work, we compute the dominant QED correction to the neutrino-electron interaction rate in the vicinity of neutrino decoupling in the early universe, and estimate its impact on $N_{\rm eff}$. We find that the correction to the interaction rate is at the sub-percent level. The...
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Prof. Paul Karchin (Wayne State University (US))Other BSM
Doubly charged Higgs-like particles (H++ and H--) are predicted in a variety of BSM models which include the Drell-Yan-like production mechanism, q qbar -> Z/gamma* -> H++ H--. Each doubly charged Higgs can decay to a pair of same-sign standard model leptons, producing events with distinctive signatures including electrons, muons, and taus. The most stringent experimental lower bound on the...
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Dr Vishvas PandeyNeutrino Physics
The Short-Baseline Near Detector (SBND) is one of three Liquid Argon Time Projection Chamber (LArTPC) neutrino detectors positioned along the axis of the Booster Neutrino Beam (BNB) at Fermilab, as part of the Short-Baseline Neutrino (SBN) Program. The detector is currently being commissioned and is expected to take neutrino data this year. SBND is characterized by superb imaging capabilities...
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Ms Ipsita Ray (Indian Institute of Technology Gandhinagar, India)Quark and Lepton Flavor Physics
We have reconsidered the possible new physics (NP) scenarios in the $\bar{B}\to D(D^*) \ell^-\bar{\nu}_{\ell}$ decays in light of the recent LHCb result on $R_{D^*}$ = $\frac{\Gamma(\bar{B}\to D^{*}\tau^-\bar{\nu}_{\tau})}{\Gamma(\bar{B}\to D^{*}\ell^-\bar{\nu}_{\ell})}$ ($l \in e, \mu$). The contribution from NP could be of minimal flavor violating (MFV) type which leads to similar effects in...
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Prudhvi Bhattiprolu (University of Michigan)Dark Matter
We describe a simple dark sector structure which, if present, has implications for the direct detection of dark matter (DM): the Dark Sink. A Dark Sink transports energy density from the DM into light dark-sector states that do not appreciably contribute to the DM density. As an example, we consider a light, neutral fermion $\psi$ which interacts solely with DM $\chi$ via the exchange of a...
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Yannis GeorisGravity & Gravitational Waves
Hot viscous plasmas unavoidably emit a gravitational wave background, similar to the electromagnetic black body radiation. We study the contribution from hidden particles to the diffuse background emitted by the primordial plasma in the early universe. While this contribution can easily dominate over that from Standard Model particles, we find that both are capped by a generic upper bound that...
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Dorian Amaral (Rice University)Dark Matter
Ultralight spin-1 particles can constitute all of dark matter and leave their signature as a coherent, oscillatory signal in terrestrial quantum detectors. Leveraging advancements in quantum metrology, these sensors are well-poised to measure these signals due to their incredible sensitivity to tiny forces and displacements. However, a statistical frequency-space analysis of this signal...
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