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Brad Joliff (McDonnell Center for the Space Sciences)06/06/2022, 08:45
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Suzanne Staggs (Princeton University)06/06/2022, 09:00
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Adam Riess06/06/2022, 09:30
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Subir Sarkar (University of Oxford)06/06/2022, 10:00
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Robert Brandenberger (McGill University)06/06/2022, 11:00
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Tanmay Vachaspati (Arizona State University)06/06/2022, 11:30
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Shun Saito (Missouri University of Science and Technology)06/06/2022, 12:00
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Gianpaolo Carosi (Lawrence Livermore National Laboratory)06/06/2022, 13:30
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Fabrizio Rompineve (CERN)06/06/2022, 14:00
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Francesco D'Eramo (University of Padua)06/06/2022, 14:30
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Sudip Jana (Max-Planck-Institut für Kernphysik)06/06/2022, 15:30
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Howard Baer06/06/2022, 16:00
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Jim Gates06/06/2022, 16:30
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Matteo Duranti (Universita e INFN, Perugia (IT))07/06/2022, 08:30
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Rupak Mahapatra (Texas A&M University)07/06/2022, 09:00
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Dan Hooper07/06/2022, 09:30
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Rohini Godbole (Centre for Theoretical Studies (CTS))07/06/2022, 10:00
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Suchita Kulkarni (University of Graz)07/06/2022, 11:00
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Marc Kamionkowski (Johns Hopkins University)07/06/2022, 11:30
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Petra Huentemeyer07/06/2022, 12:00
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Michael Wondrak (Frankfurt Institute for Advanced Studies (FIAS))07/06/2022, 13:30
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Shufang Su (University of Arizona)07/06/2022, 14:00
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Ian Lewis (The University of Kansas)07/06/2022, 14:30
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Mohammadreza Zakeri (University of Kentucky)07/06/2022, 15:30
Baryon number violation (BNV) has been motivated by and studied in various extensions to the Standard Model. Observation of BNV in experiments would be a clear indication of new physics, which has not occurred so far. The high baryon density in neutron stars may enhance the rates of baryon number violating processes beyond those possible in terrestrial settings. Therefore, it is important to...
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Joseph Ryan (Southern Methodist University)07/06/2022, 15:30
As the quantity of cosmological data grows, it becomes increasingly important to be able to accurately forecast the constraints those data can place on cosmological models, so that instrumental and computational time and resources can be used most effectively. Fisher forecasting, which uses the Fisher Information Matrix (FIM) to approximate the (negative) log-likelihood of a given model, is a...
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85. Impact of Sommerfeld Effect and Bound State Formation in Simplified t-Channel Dark Matter ModelsMathias Becker (Technical University of Munich)07/06/2022, 15:30
A non-minimal dark sector could explain why WIMP dark matter has evaded detection so far. Based on the extensively studied example of a simplified t-channel dark matter model involving a colored mediator, we demonstrate that the Sommerfeld effect and bound state formation must be considered for an accurate prediction of the relic density and thus also when inferring the experimental...
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Ya-Juan Zheng07/06/2022, 15:30
Measurements of the dileptonic $t\bar{t}$ events at the LHC found excesses over the SM simulations at small azimuthal angle separation and small invariant mass region. We examine the possibility of those excesses as consequences of non-perturbative enhancement of the $t\bar{t}$ production cross section near the threshold. While sub-dominant in terms of total rates, so-far neglected toponium...
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Morgan Cassidy (University of Washington (US))07/06/2022, 15:45
The project proposes a search for a new source of CP Violation by studying a CP Violating Top Yukawa. The study is conducted through muon collisions at the proposed muon collider. Signal processes include $tth$, $tth\nu\nu$, and $tbh\mu\nu$ decaying semi-leptonically. Cross section dependence of signal processes with $\sqrt{s}$ and cross section dependence with varying CP-phase, $\alpha$, at...
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Maria Mehmood (Quaid-i-Azam University, Islamabad, Pakistan)07/06/2022, 15:45
We explore proton decay in a class of realistic supersymmetric flipped $SU(5)$ models supplemented by a $U(1)_R$ symmetry which plays an essential role in implementing hybrid inflation. Two distinct neutrino mass models, based on inverse seesaw and type I seesaw, are identified, with the latter arising from the breaking of $U(1)_R$ by nonrenormalizable superpotential terms. Depending on the...
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Jordan Stevens (Missouri University of Science and Technology)07/06/2022, 15:45
The flat ΛCDM model of the Universe has started to falter due to recent and precise observations. One of the most promising models to resolve these problems is the axion-like Early Dark Energy (EDE) model. Our goal is to clarify how the EDE model and the shape of the Universe are simultaneously constrained with these recent datasets. We find that Early Dark Energy depends on shape only when...
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Robert Group07/06/2022, 15:45
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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Kim Berghaus (Johns Hopkins University)07/06/2022, 16:00
Thermal friction offers a promising solution to the Hubble and the large-scale structure (LSS)
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tensions. This additional friction acts on a scalar field in the early universe and extracts its energy
density into dark radiation, the cumulative effect being similar to that of an early dark energy (EDE)
scenario. The dark radiation automatically redshifts at the minimal necessary rate to... -
Andre Frankenthal (Princeton University (US))07/06/2022, 16:00
In recent years the physics of Feebly Interacting Particles (FIPs) saw a growing interest as a possible solution to the Dark Matter issue [1]. FIPs are exotic and relatively light particles, not charged under the SM gauge group, whose interactions with the SM particles are extremely suppressed. They are assumed to be part of a possible secluded sector, called the dark sector, with the lightest...
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Zhongtian Dong (University of Kansas)07/06/2022, 16:00
The top quark spin information is highly correlated with the final state lepton polarization, making the dileptonic $t\bar{t}$ events good candidates to study quantum entanglement at the LHC. The $t\bar{t}$ momentum reconstruction is a key ingredient to accurately assessing such measurements. We will be comparing the strengths and weaknesses of different top-quark momentum reconstruction...
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Garv Chauhan (UCLouvain)07/06/2022, 16:00
Hidden U(1) symmetries in the right-handed neutrino (νR) sector are theoretically well-motivated and would give rise to an inherently dark gauge boson which we refer to as the νR-philic Z'. An important feature of this Z' is that its couplings to neutrinos are generally much larger than its couplings to charged leptons and quarks, providing a particularly interesting scenario for future...
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Ritu Dcruz (Oklahoma State University)07/06/2022, 16:15
In the light of recent experimental results confirming a $4.2\sigma$ discrepancy in the measurement of $(g-2)_\mu$ and a possible $7\sigma$ excess in the $W$ boson mass, we propose a simple charged singlet extension of the Scotogenic model, the ScotoZee model, to investigate these anomalies while establishing a direct correlation with the neutrino oscillation data as well as the observed relic...
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Maurice van putten (Sejong University)07/06/2022, 16:15
Modern precision measurements of the Hubble parameter H0 increasingly lay bare an accelerated expansion of the Universe beyond what is expected from Planck-LCDM analysis of the Cosmic Microwave Background (CMB). This H0-tension is here modeled by a non-local dark energy Λ=g(1-q)H^2, subject to the age of the Universe and the BAO inferred from globular clusters of the Milky Way and,...
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Keping Xie (University of Pittsburgh)07/06/2022, 16:15
We consider the model of heavy neutral leptons (HNLs) as an example to explore the potential of new physics searches at the Electron-Ion Collider (EIC). We propose two broad categories of search strategies depending on the HNL lifetime: direct searches for the prompt decay of HNLs with a short lifetime and displaced vertex searches for long-lived ones. After identifying the most promising...
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Robert McGehee07/06/2022, 16:15
We estimate the maximum direct detection cross section for sub-GeV dark matter scattering off nucleons. For dark matter masses in the range of 10 keV − 100 MeV, cross sections greater than $10^{−36}- 10^{−30} \text{ cm}^2$ seem implausible. We introduce a dark matter candidate which realizes this maximum cross section: HighlY interactive ParticlE Relics (HYPERs). After HYPERs freeze-in, a dark...
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Vishnu Padmanabhan Kovilakam (Oklahoma State University)07/06/2022, 16:30
In this talk, I shall describe how the recent high precision measurement of the $W$-boson mass by the CDF collaboration and the muon $(g-2)$ anomaly are correlated in the context of the two Higgs doublet model. The charged and neutral scalars of the model cannot be heavier than about 600 GeV for a simultaneous explanation of the two anomalies. The entire parameter space of the model can be...
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Jose Ruiz (Universidad de Antioquia (CO))07/06/2022, 16:30
We consider a simplified model where a quarkofobic W' is added to the standar model. This W' is considered to not couple or couple very feable to quarks, but in addition it couples to the standard model electroweak gauge bosons and leptons. We study the implications of such a new particle for the LHC and b-anomalies. We finally set limits from high energy searches that could be performed in...
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Hasti Khoraminezhad (Missouri University of Science and Technology)07/06/2022, 16:30
Different evolution of the two dominant matter components of our Universe baryons and cold dark matter, due to the photon pressure before recombination, causes relative perturbations between the two fluids in the early Universe. These perturbations can be both in the density and peculiar velocity of the two fields and we call them relative baryon-CDM perturbations which are commonly neglected...
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Madeleine Zurowski (University of Melbourne)07/06/2022, 16:30
The SABRE (Sodium iodide with Active Background REjection) experiment aims to detect an annual rate modulation from dark matter interactions in ultra-high purity NaI(Tl) crystals in order to provide a model independent test of the signal observed by DAMA/LIBRA. It is made up of two separate detectors; SABRE South located at the Stawell Underground Physics Laboratory (SUPL), in regional...
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Sayan Mandal07/06/2022, 16:45
The origin of the microgauss magnetic fields observed in galaxies is unknown. One scenario is that primordial magnetic fields (PMFs) generated during inflation, larger than 0.1 nanogauss on Mpc scales, were compressed to microgauss strengths in galaxies during structure formation. Thus, detecting such a PMF just after recombination would be evidence of this inflationary origin. We find that...
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Jacob Mclaughlin (Northwestern University)07/06/2022, 16:45
Liquid xenon time projection chambers (LXe-TPCs) combine self-shielding, event position reconstruction, particle-type discrimination, and scalability to produce consistently world leading Weakly Interacting Massive Particle (WIMP) sensitivity. LUX-ZEPLIN (LZ) has the furthest physics reach of any xenon TPC built to date, however Rn222 chain Pb214 decays still represent the largest background...
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Tomas Atehortua Garces (Universidad de Antioquia (CO))07/06/2022, 16:45
The $R_{D(∗)}$ anomaly represents a tension with the lepton flavor universality. With recent data, the anomaly has a statistical significance greater than $3\sigma$ between BaBar, LHCb and Belle observatons. Many theoretical models were proposed to solve such difference between the theory and experiments. In the work we have done, we explore the phenomenology of 3 different models that could...
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So Chigusa07/06/2022, 16:45
We derive an upper bound on the smuon mass assuming that the muon $g−2$ anomaly is explained by the supersymmetric (SUSY) contribution. In the minimal SUSY standard model, the SUSY contribution to the muon $g−2$ is enhanced when the Higgsino mass parameter is large. Then, the smuon-smuon-Higgs trilinear coupling is enhanced, which may destabilize the electroweak vacuum. We calculate precisely...
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Jillian Paulin (Colgate University)07/06/2022, 17:00
Dark matter (DM) characteristics can be explored via indirect detection through the observations of astrophysical objects which have captured DM. In this paper we analyze the role of stellar velocity on multiscatter DM capture rates. The addition of the stellar velocity with respect to its surrounding DM halo induces a suppression of this capture rate. We develop and validate an analytical...
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Moinul Rahat07/06/2022, 17:00
The inflationary universe could be an interesting testbed of beyond the Standard Model theories at energies far above the reach of terrestrial colliders. In this talk, I will discuss the production of massive $U(1)$ gauge bosons during inflation and show that it leaves characteristic signatures in CMB spectrum and creates gravitational waves detectable at LIGO/LISA interferometers. I will also...
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Albany Blackburn (Harvey Mudd College)07/06/2022, 17:00
We propose a program at B-factories of inclusive, multi-track displaced vertex searches, which are expected to be low background and give excellent sensitivity to non-minimal hidden sectors. Multi-particle hidden sectors often include long-lived particles (LLPs) which result from approximate symmetries, and we classify the possible decays of GeV-scale LLPs in an effective field theory...
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Amit Tiwari07/06/2022, 17:00
We explore the implications of resolving the muon $g-2$ anomaly in a $SU(4)_c \times SU(2)_L \times SU(2)_R$ model, where the soft supersymmetry breaking scalar and gaugino masses break the left-right (LR) symmetry. A 2 $\sigma$ resolution of the anomaly requires relatively light sleptons, chargino and LSP neutralino. The stau turns out to be the NLSP of mass $m_{\tilde{\tau}}$ <~ 400 GeV, and...
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Himanish Ganjoo (North Carolina State University)07/06/2022, 17:15
Effects of A Hidden Sector on the Matter Power Spectrum
The absence of dark matter signals in direct detection experiments and collider searches has prompted interest in models in which dark matter belongs to a hidden sector minimally coupled to the Standard Model. In these scenarios, a long-lived massive particle might come to dominate the energy density of the early universe...
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Roland Allen07/06/2022, 17:15
We propose and describe a dark matter particle which is consistent with current experiment and observation, and which should be detectable within the next 1-5 years [1,2]. This particle is unique in that it has (i) precisely defined couplings and (ii) a well-defined mass of about 72 GeV. It has not yet been detected because it has no interactions other than second-order gauge couplings, to W...
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Shiyuan Xu07/06/2022, 17:15
We investigate the Yukawa and the scalar sectors of a general $S_3$-symmetric three-Higgs doublet model.Assuming that the quarks and leptons belong to 2+1 dimensional representations of S3, we obtain consistent fits to quark and lepton masses and mixings, including neutrino oscillations. We analyze the stability of the Higgs potential as well as perturbative unitarity constraints on the...
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Jim Cochran (Iowa State Univ.)07/06/2022, 17:15
The Belle II experiment at the SuperKEKB energy-asymmetric e+e− collider is a substantial upgrade of the B factory facility at the Japanese KEK laboratory. The design luminosity of the machine is 6×1035 cm−2s−1 and the Belle II experiment aims to ultimately record 50 ab−1 of data, a factor of 50 more than its predecessor. With this data set, Belle II will be able to measure the...
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GEORGE WOJCIK07/06/2022, 17:30
In models of thermal dark matter with MeV-GeV masses, a common simplified construction relies on a U(1) dark sector (and corresponding dark photon of MeV-GeV mass) which kinetically mixes with the Standard Model (SM) hypercharge to serve as a mediator to achieve the observed relic abundance. This kinetic mixing will arise at one-loop order if the theory includes so-called "portal matter"--...
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Fang Xu07/06/2022, 17:30
In R-parity violating supersymmetric scenarios, assuming the third-generation superpartners to be the lightest (calling the scenario RPV3), we show that there are some benchmark scenarios in which $R_{D^{(*)}}$, $R_{K^{(*)}}$ and $(g-2)_{\mu}$ anomalies can be addressed and also can be detected at 14 TeV HL-LHC or future hadron colliders.
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Volodymyr Takhistov07/06/2022, 17:30
Primordial black holes constitute an attractive dark matter candidate. I will discuss several new observational signatures for primordial black holes spanning orders of magnitude in mass, connecting them to gravitational wave and multi-messenger astronomy as well as long-standing astrophysical puzzles such as the origin of heavy elements.
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Rui An (University of Southern California)07/06/2022, 17:30
The presence of light thermally coupled dark matter affects early expansion history and production of light elements during the Big Bang Nucleosynthesis. Specifically, dark matter that annihilates into Standard Model particles can modify the effective number of light species in the universe Neff , as well as the abundance of light elements created buring BBN. These quantities in turn affect...
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Maryam Aghaei Abchouyeh07/06/2022, 17:45
Unparticles are the low energy phase of Banks-Zaks fields, potentially capable of explaining late-time universe. The models is described by breaking the conformal symmetry at finite temperature giving rise to a non-radiative term with an unknown sign in energy density. This sign ambiguity makes the corrections around the IR fixed point to be either normal or tachyonic. The contribution of the...
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Mudit Jain07/06/2022, 17:45
Apart from the Standard Model, our Universe could be host to a diverse set of degrees of freedom (dark sector). The dark sector could comprise of various bosonic fields with possible self interactions alongside gravity, containing macroscopic/astrophysical bound states known as solitons. Depending upon the spin nature of the field, these solitons can even carry huge amounts of intrinsic spin...
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Saeid Foroughi-Abari (University of Victoria)07/06/2022, 17:45
Experiments using proton beams at high luminosity colliders and fixed-target facilities provide impressive sensitivity to new light weakly coupled degrees of freedom. We revisit the production of dark vectors and scalars via proton bremsstrahlung for a range of beam energies, including those relevant for the proposed Forward Physics Facility (FPF) at the High Luminosity LHC, and upgraded...
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Evan Grohs08/06/2022, 08:30
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Gail McLaughlin08/06/2022, 09:00
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Steven Harris (Washington University in St. Louis)08/06/2022, 09:30
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Alexander Friedland08/06/2022, 10:00
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George Fuller08/06/2022, 11:00
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Vincenzo Cirigliano08/06/2022, 11:30
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Frank Deppisch08/06/2022, 12:00
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Jan Schütte-Engel08/06/2022, 13:30
We give a detailed treatment of electromagnetic signals generated by gravitational waves (GWs) in resonant cavities. We show that it is crucial to carry out the signal calculation in a preferred frame for the laboratory, the proper detector frame. The proper detector frame metric is obtained by resumming short-wavelength effects to provide analytic results that are exact for GWs of arbitrary...
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Lee Sobotka08/06/2022, 13:30
A recent experiment has resolved the 55-year old question of the cross section for nucleon induced inelastic deexcitation of the Hoyle state, a path parallel to EM decay. The experiment deployed the TAMU active target time-projection chamber and used quasi mono-energetic neutrons from the Edwards Accelerator Laboratory (EAL) at Ohio University. The experimental logic uses detailed balance,...
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Juhi Dutta08/06/2022, 13:30
Extensions of the Two Higgs Doublet model with a complex scalar singlet (2HDMS) can accommodate all current experimental constraints and are highly motivated candidates for Beyond Standard Model Physics. It can successfully provide a dark matter candidate as well as explain baryogenesis and provides gravitational wave signals. In this work, we focus on the dark matter phenomenology of the...
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Cosmin Deaconu08/06/2022, 13:30
The Radio Neutrino Observatory - Greenland (RNO-G) seeks to detect the Askaryan radio emission from energetic neutrinos (> 10 PeV) interacting in the Greenland ice sheet. Initial deployment began last summer, and, at completion, RNO-G will be the largest and most sensitive in-ice Askaryan radio neutrino detector so far, providing access to new parameter space in astrophysical and cosmogenic...
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Neil Shah08/06/2022, 13:45
There has been much interest in novel models of dark matter that exhibit interesting behavior on galactic scales. A primary motivation is the observed Baryonic Tully-Fisher Relation in which the mass of galaxies increases as the quartic power of rotation speed. This scaling is not obviously accounted for by standard cold dark matter. This has prompted the development of dark matter models that...
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Dr Michael A. Fedderke (Johns Hopkins University)08/06/2022, 13:45
In this talk, I will evaluate the potential for gravitational-wave (GW) detection in the frequency band from 10 nHz to 1 $\mu$Hz using extremely high-precision astrometry of a small number of stars. In particular, I will argue that non-magnetic, photometrically stable hot white dwarfs (WD) located at $\sim$ kpc distances may be optimal targets for this approach. Previous studies of astrometric...
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Mainak Mukhopadhyay (Arizona State University)08/06/2022, 13:45
When a burst of neutrinos from a core-collapse supernova (CCSN) passes by the Earth, it causes a permanent change in the local space-time metric, called the gravitational wave (GW) memory. Long considered unobservable, this effect will be detectable in the near future, at deci-Hertz GW interferometers. I will present a novel idea, where observations of the neutrino GW memory from CCSNe will...
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Volodymyr Takhistov (Kavli IPMU, U. Tokyo)08/06/2022, 14:00
Cosmic rays colliding with the atmosphere have historically played a central role in exploration of neutrinos, leading to discovery of neutrino oscillations with Super-Kamiokande experiment. As I will show, the ''atmospheric collider'' offers unprecedented novel opportunities for exploration of fundamental physics. I will present leading new searches for magnetic monopoles, as well as...
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Brian Shuve (Harvey Mudd College)08/06/2022, 14:00
Sterile neutrinos at the GeV scale can resolve several outstanding problems of the Standard Model (SM), such as the source of neutrino masses and the origin of the baryon asymmetry through freeze-in leptogenesis, but they can be challenging to detect experimentally due to their small couplings to SM particles. In extensions of the SM with new interactions of the sterile neutrinos, they can be...
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In Wook Kim08/06/2022, 14:00
The MAJORANA DEMONSTRATOR neutrinoless double-beta decay ($0\nu\beta\beta$) search experiment comprises a 44 kg (29.7 kg enriched to 88\% in $^{76}$Ge) array of p-type, point-contact germanium detectors. During its main data taking period from 2015 to 2021, MAJORANA reached an exposure of $\sim$65 kg-y before the removal of the enriched detectors. The MAJORANA DEMONSTRATOR continues to operate...
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Dr Keisuke Inomata (University of Chicago, KICP)08/06/2022, 14:00
I will discuss gravitational waves (GWs) induced by a heavy spectator field that starts to oscillate during inflation. During the oscillation of the spectator field, its effective mass can also oscillate in some potentials. This mass oscillation can resonantly amplify the spectator field fluctuations. I will show that these amplified fluctuations can induce large GWs, which could be...
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Ms Cristina Benso (Max Planck Institute for Nuclear Physics in Heidelberg)08/06/2022, 14:15
Sterile neutrinos with keV-scale masses are popular candidates for warm dark matter. In the most straightforward case they are produced via oscillations with active neutrinos. We introduce all types of effective self-interactions of active neutrinos and investigate the effect on the parameter space of sterile neutrino mass and mixing. Our focus is on mixing with electron neutrinos, which is...
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Seán Mee08/06/2022, 14:15
We discuss construction principles of strongly interacting theories containing a dark matter candidate, with a particular focus on an $Sp(4)$ gauge symmetry. We give an account of the global symmetries and breaking patterns of these theories. Finally, we discuss simple portals between the DM sector and the standard model, as well as elucidate phenomenological consequences of such couplings.
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Heling Deng08/06/2022, 14:15
The Peters formula, which tells how the coalescence time of a binary system emitting gravitational radiation is determined by the initial size and shape of the elliptic orbit, is often used in estimating the merger rate of primordial black holes and the gravitational wave background from the mergers. Valid as it is in some interesting scenarios, such as the analysis of the LIGO-Virgo events,...
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Valentina Biancacci08/06/2022, 14:15
The observation of neutrinoless double-beta ($0\nu\beta\beta$) decay would establish both the violation of lepton number conservation and the Majorana nature of the neutrino. It would also constrain the neutrino mass scale in the picture of light-neutrino exchange.
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The best limit on the $0\nu\beta\beta$ half-life of $^{76}$Ge, one of the most promising isotopes to search for it, is $1.8\cdot... -
Emma Clarke08/06/2022, 14:30
Gravitational waves (GWs) may be sourced by hydrodynamic and hydromagnetic turbulence generated in cosmological phase transitions such as that at the quantum-chromodynamic (QCD) scale. I will discuss the results of numerical simulations of GWs from the QCD scale induced by various models of primordial turbulence and considering new limits on the turbulent energies which properly account for...
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Jose Carpio (Penn State University)08/06/2022, 14:30
Beyond the Standard Model (BSM) interactions in the neutrino sector have been of much interest in cosmology and astroparticle physics. We developed a Monte Carlo code to investigate the neutrino time delay distribution caused by BSM interactions en route to the observer. While we find excellent agreement for small optical depths, the optically thick limit show features that are not described...
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Carlos Jaramillo08/06/2022, 14:30
In previous work [2004.12904] we have shown that sterile neutrino dark matter can in principle be produced by thermal freeze-out if the Yukawa coupling is effectively dynamic in the early universe. This is realised (for example) within a Froggatt-Nielsen model, if the flavon vev is shifted during a phase transition, as the scalar potential relaxes to its true minimum in field space, thus...
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Prakash Gautam08/06/2022, 14:30
nEXO is a next-generation 5 tonne homogeneous liquid xenon time projection chamber(TPC) which seeks to detect neutrinoless double beta decay($0\nu\beta\beta$) decay in $^{136}$Xe. The experiment will use the combination of scintillation and ionization signals to reconstruct events with an energy resolution of $<$1% $\sigma/E$ at the $0\nu\beta\beta$ Q-value of $2.5$MeV. It is projected to...
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Matthew Carney08/06/2022, 14:45
The growing collection of gravitational-wave (GW) detections from current ground-based detectors coupled with constant improvements in detector sensitivity provide opportunities to observe as-of-yet undiscovered consequences of General Relativity. The recent prediction of the existence of GW “tails” produced by primary signals scattering off of stellar-density astrophysical objects is a...
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Shreyashi Chakdar08/06/2022, 14:45
We carry out a systematic investigation for minimal Scotogenic models based on a dark $U(1)_D$ gauge symmetry, in which the neutrino masses are induced at the one-loop level and include a chiral dark matter (DM) candidate. Assuming this $U(1)_D$ gauge symmetry is broken by only one Higgs singlet scalar that also generates masses to all dark fermions, we analyze the stability of the DM...
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Cameron Blake Erickson (University of Illinois at Urbana Champaign)08/06/2022, 14:45
The search for additional CP-violating interactions generated by BSM physics motivates a strong experimental effort to measure the neutron electric dipole moment (nEDM). The nEDM@SNS experiment planned at the Spallation Neutron Source at Oak Ridge National Laboratory aims to achieve a sensitivity of $2−3×10^{−28}$ e-cm, an improvement upon the current limit of $1x10^{-26}$ e-cm. This is...
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Ali Alnafisah (King Saud University)08/06/2022, 14:45
The study of particle dark matter is of a dramatic importance in both fields particle physics and modern cosmology. It plays a profound rule in understanding the deep structure of nature. However, an abundance of multi-component dark matter models have been studied and investigated over the last decade. And since nature seeks simplicity we choose to review the simplest models and present new...
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Dr Debasish Borah (Indian Institute of Technology Guwahati)08/06/2022, 15:30
We propose a novel probe of weakly interacting massive particle (WIMP) dark matter (DM) candidates of a wide mass range which fall short of the required annihilation rates to satisfy correct thermal relic abundance, dubbed as "Miracle-less WIMP". If the DM interactions are mediated by an Abelian gauge boson like B-L, its annihilation rates typically remain smaller than the WIMP ballpark for...
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Vincent Rodgers08/06/2022, 15:30
Abstract: In 2D, Einstein’s theory of general relativity becomes trivial. Yet when one studies the symmetries of 2D through string theory, a new field, dubbed the diffeomorphism field, rise from the algebra of reparameterization. We show that this field has meaning in higher dimensions through the ubiquitous notion of geodesics and projective connections. By using the Thomas-Whitehead...
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Chang Lee (Max Planck Institute for Physics)08/06/2022, 15:30
We propose to use an elongated rectangular waveguide near its cutoff frequency to speed up axionic dark matter searches. The detector's large surface area increases the signal power, while its narrow transverse dimension and tapered-waveguide coupling suppress parasitic modes. The proposed system can fit inside a solenoid magnet and detect the QCD-axion at the axion mass $40-400\,\mu$eV. We...
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Prof. Ian Redmount (Saint Louis University, Department of Physics)08/06/2022, 15:30
A Friedmann-Robertson-Walker spacetime with contents dominated by a gas of tachyonic particles undergoes expansion with inflection (cosmic jerk) and acceleration similar, but not identical, to that of dark-energy-dominated models. The testing of such a tachyonic model against observation, as an alternative to the standard model, is under way. Fitting the model to redshift and distance data...
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Itamar J. Allali08/06/2022, 15:45
I will discuss a model in which the relic abundance of axions is altered from the standard misalignment mechanism, either increased or decreased, due to the presence of a new light scalar that couples to the radial part of the Peccei-Quinn (PQ) field. The light scalar makes the effective PQ symmetry-breaking scale dynamical, altering the early-time dynamics for the axion and affecting its...
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Niklas Becker08/06/2022, 15:45
The advent of gravitational wave astronomy has opened up new possibilities for the detection and measurement of dark matter. One of the most promising avenues is the observation of Intermediate Mass Ratio Inspirals (IMRIs) with future space based observatories such as LISA.
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Around intermediate mass black holes in the center of smaller halos, dark matter overdensities - so-called dark matter... -
Urjit Yajnik (IIT Bombay, Mumbai)08/06/2022, 15:45
Low scale leptogenesis scenarios are difficult to verify due to our inability to relate the parameters involved in the early universe processes with the low energy or collider observables. Here we show that one can in principle relate the parameters giving rise to the transient CP violating phase involved in leptogenesis with those that can be deduced from the observation of electric dipole...
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Kory Stiffler08/06/2022, 15:45
We review the foundational aspects of the newly developed projectively invariant Thomas-Whitehead (TW) model of gravity. This model is an extension of Einstein-Hilbert Gravity, endowed with projective invariance. The importance of projective invariance to gravitation has deep roots in string theory, which we briefly discuss. We demonstrate how dark energy and an inflaton field naturally emerge...
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Prudhvi Bhattiprolu (University of Michigan)08/06/2022, 16:00
Solutions to the $\mu$ problem in supersymmetry based on the Kim-Nilles mechanism naturally feature a Dine-Fischler-Srednicki-Zhitnitsky (DFSZ) axion with decay constant of order the geometric mean of the Planck and TeV scales, consistent with astrophysical limits. We investigate minimal models of this type with two gauge-singlet fields that break a Peccei-Quinn symmetry, and extensions with...
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Catherine Whiting (Colorado Mesa University)08/06/2022, 16:00
Inflationary models that are capable of matching observational constraints are abundant, but very few have an underlying physical principle guiding the choice of the inflaton potential and dynamics. We show how a recently developed model of gravity which incorporates an extension of general relativity to include projective invariance (TW gravity) naturally gives rise to a field acting as the...
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Pranjal Ralegankar08/06/2022, 16:00
Measurement of the effective number of neutrino species, $N_{\rm eff}$, by future cosmic microwave background (CMB) experiments is expected to be sensitive enough to rule out new relativistic particles that were in equilibrium with the Standard model (SM) plasma, if the measured $N_{\rm eff}$ value is consistent with the SM value of 3.044. Consequently, the interaction between the new...
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Kirtimaan Mohan08/06/2022, 16:00
Interactions of Dark Matter with the Standard Model may be mediated through gravitons alone. While this coupling is Planck suppressed in 4 dimensions, in extra dimensional models the coupling can be large and dark matter can be wimp like. Calculating amplitudes for the annihilation of Dark Matter to a tower of massive spin-2 particles in such models is challenging. As a first step, we examine...
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David Tucker-Smith (Williams College)08/06/2022, 16:15
We discuss the cosmology and phenomenology of freeze-in baryogenesis via dark-matter oscillations, focusing mainly on the case in which the dark matter couples to Standard Model leptons. We investigate viable models both with and without a Z_2 symmetry under which all new fields are charged, highlighting scenarios in which the baryon asymmetry is parametrically distinct from and enhanced...
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Tyler Grover (The University of Iowa)08/06/2022, 16:15
The Thomas-Whitehead projective gravity theory has its origins in string theory. There is an identified correspondence between the coadjoint elements of the Virasoro algebra and Sturm-Liouville operators. This identification of the projective structure in one dimension allows for relating the Virasoro algebra and projective geometry in higher dimensions. The coadjoint orbits of Virasoro...
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Peizhi Du (Stony Brook University)08/06/2022, 16:15
Stars that pass close to the supermassive black holes located in the center of galaxies can be violently disrupted by tidal forces, leading to flares that are observed as bright transient events in sky surveys. The rate for these events to occur depends on the black hole spins, which in turn can be affected by ultra-light bosons due to superradiance. In this talk, I will show that searches for...
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Anil Thapa (University of Virginia)08/06/2022, 16:15
We show how trinification models based on the gauge group $SU(3)_C \times SU(3)_L \times SU(3)_R$ realized near the TeV scale can provide naturally a variety of dark matter (DM) candidates. These models contain a discrete $T$ parity which may remain unbroken even after spontaneous symmetry breaking. The lightest $T$-odd particle, which could be a fermion, a scalar, or a gauge boson, can...
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Takuya Okawa08/06/2022, 16:30
Photons with a frequency equivalent to one-half of the axion mass can induce its decay into two photons. Half of the produced photons generate a potentially detectable 'gegenschein' radio signal traveling in the opposite direction. We take into account that, in addition to a smooth halo distribution, a fraction of the axionic dark matter might be in the form of compact objects known as axion...
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William Charles (Washington University in St. Louis)08/06/2022, 16:30
One of the main challenges in numerical cosmology is the difficulty of producing large scale, high resolution simulation data, especially when exploring novel cosmological models. Producing physical simulations on cosmological scales with enough detail to resolve galaxy-formation scale physics is very computationally expensive. In this work, I train a generative adversarial network (GAN) to...
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Arnab Dasgupta (PITT-PACC)08/06/2022, 16:30
In this article, we have reanalysed the classically scale-invariant $B-L$ model in the context of Leptogenesis using the {\it Mass-Gain} mechanism coined by Blades {\it et. al.}. We have found a very close intimate correlation between the scale of breaking and the Mass of Right Handed Neutrinos (RHNs) and have found for the first time probing high scale leptogenesis scale via near future...
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Brooks Thomas08/06/2022, 16:30
One signature of an expanding universe is the time-variation of the cosmological abundances of its different components. For example, a radiation-dominated universe inevitably gives way to a matter-dominated universe, and critical moments such as matter-radiation equality are fleeting. In this talk, I shall demonstrate that this lore is not always correct. In particular, I shall show how a...
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Brian Clark (Ohio State University)09/06/2022, 08:30
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Abigail Vieregg (University of Chicago)09/06/2022, 09:00
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Kate Scholberg09/06/2022, 09:30
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Kaladi Babu (Oklahoma State University)09/06/2022, 10:00
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Doojin Kim (Texas A & M University (US))09/06/2022, 11:00
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Clara Murgui09/06/2022, 11:30
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Pavel Fileviez Perez09/06/2022, 12:00
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Susan Gardner (University of Kentucky)09/06/2022, 13:30
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Claudia Ratti09/06/2022, 14:00
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Martin Hoferichter09/06/2022, 14:30
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Manuel Franco Sevilla (University of Maryland (US))09/06/2022, 15:30
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Nazila Mahmoudi (CERN and Lyon University (FR))09/06/2022, 16:00
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Amarjit Soni (BNL)09/06/2022, 16:30
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Andrew Askew (Florida State University (US))10/06/2022, 08:30
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Tao Han10/06/2022, 09:00
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Susanne Westhoff (Heidelberg University)10/06/2022, 09:30
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Jonathan Feng (University of California Irvine (US))10/06/2022, 10:00
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James Dent (Sam Houston State University)10/06/2022, 11:00
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Debasish Borah (Indian Institute of Technology Guwahati)10/06/2022, 11:30
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Bhaskar Dutta (Texas A&M University)10/06/2022, 12:00
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Bhupal Dev (Washington University in St. Louis)10/06/2022, 12:40
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Mark Hertzberg (Tufts University)
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Saqib Hussain, Prof. Adnan Adnan Aslam
The geodesic motion of the charged particles in the vicinity of the event horizon of weakly magnetized Schwarzschild anti-de-Sitter black hole (BH) with topological defects has been investigated. The effect of dark energy on the size of the event horizon, the mass of the BH, and the stability of the orbits of the particles have also been explored in detail. We discussed, if the BH mass...
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Roberto Franceschini (Rome 3 U.)
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Nicholas DePorzio
Cosmological data provide a powerful tool in the search for physics beyond the Standard Model (SM). An interesting target are light relics, new degrees of freedom which decoupled from the Standard Model while relativistic. Nearly massless relics contribute to the radiation energy budget, and are commonly searched through variations in the effective number $N_{\rm eff}$ of neutrino species....
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Prativa Pritimita
We derive the lower bound on absolute scale of lightest neutrino mass for normal
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hierarchy and inverted hierarchy patterns of light neutrinos by studying the new
physics contributions to charged lepton flavour violations in a TeV scale left-right symmetric model. The framework allows large light-heavy neutrino mixing where the light neutrino mass formula is governed by natural type-II... -
Subhojit Roy (Harish-Chandra Research Institute, INDIA)
We study in detail the viability and the patterns of a strong first-order electroweak phase transition as a prerequisite to electroweak baryogenesis in the framework of $Z_3$-invariant Next-to-Minimal Supersymmetric Standard Model (NMSSM), in the light of recent experimental results from the Higgs sector, dark matter (DM) searches and those from the searches of the lighter chargino and...
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Shiuli Chatterjee
We study a minimal model of pseudo-Dirac dark matter, interacting through transition electric and magnetic dipole moments. Motivated by the fact that xenon experiments can detect electrons down to ∼keV recoil energies, we consider O(keV) splittings between the mass eigenstates. We study the production of this dark matter candidate via the freeze-in mechanism. We discuss the direct detection...
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Shufang Su (University of Arizona)
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Dr Vesselin Gueorguiev
A review of the Scale Invariant Vacuum (SIV) idea will be presented as related to Weyl Integrable Geometry [1]. The main results related to SIV and inflation [2], the growth of the density fluctuations [3], and the application of the SIV to scale-invariant dynamics of Galaxies, MOND, Dark Matter, and the Dwarf Spheroidals [4] will be highlighted.
[1] Gueorguiev, V. G., Maeder, A., The Scale...
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Bowen Fu
The long-existing problem of neutrino mass and mixing can be connected to cosmological phenomena, such as leptogenesis and the existence of dark matter (DM). In the extension of the type I seesaw model with two right-handed (RH) neutrinos, the seesaw Yukawa can drive the DM production, even with the competition from gravitational effect and constraints from leptogenesis. However, the DM...
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Prof. Subir Sarkar (University of Oxford)
The cosmological standard model is founded on the assumption that the universe is isotropic and homogeneous when averaged on large scales. The CMB dipole anisotropy is attributed to our local motion relative to the cosmic rest frame in which it is isotropic. There must then be a corresponding dipole in the distribution of high redshift sources. However the the matter dipole traced by radio...
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Keir Rogers
The fundamental nature of dark matter so far eludes direct detection experiments, but it has left its imprint in the large-scale structure (LSS) of the Universe. Extracting this information requires accurate modelling of structure formation and careful handling of astrophysical uncertainties. I will present new bounds using the LSS on two compelling dark matter scenarios that are otherwise...
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TBD
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Andrew Eberhardt (Stanford University)
The nature of dark matter, one of the major components of the cosmic standard model, remains one of the outstanding problems in physics. One interesting model is scalar field dark matter (SFDM), which fits naturally into observations in both particle physics and cosmology. Simulations and calculations using SFDM often use a classical field approximation (MFT) of the underlying quantum field...
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Mr Arnold Lasky (Unaffiliated)
Abstract
The Modified Archimedes Principle (MAP) is a modified gravity theory, which holds that a massive body, such as the sun, or a mass equivalent vacuum energy body, such as a halo, which is immersed in the vacuum energy of space, displaces a volume of such space that is centered on such body and contains an amount of mass equivalent vacuum energy that is exactly equal to the mass of...
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Michael A. Ivanov
In the author's model of low-energy quantum gravity, the
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cosmological redshift, additional darkening of distant objects and
a diffuse cosmic optical background, presumably detected by the
New Horizons mission, can be interpreted, without cosmological
expansion and dark energy, as a result of the scattering of
photons on superstrongly interacting background gravitons. The
constancy of the... -
Mr Daniel Ocampo Henao (Universidad de Antioquia (CO))
We study the possible searches at colliders using Vector Boson Fusion topology in the context of Simplified Models signatures. We examine the possible physics reach of these searches with regard to monojet-type searches, and determine how these two signatures are complementary. We determine the generic characteristics for dark matter signatures in the LHC if the underlying physics imply Vector...
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