DPF - PHENO 2024

Session

Dark Matter

13 May 2024, 14:00

University of Pittsburgh / Carnegie Mellon University

Conveners

Dark Matter: DM at accelerators

• Mudit Rai (Texas AM University)

Dark Matter: Direct Detection

• Matthew Szydagis

Dark Matter: DM at accelerators

• Brooks Thomas

Dark Matter: Direct Detection

• Rodolfo Capdevilla (Fermi National Accelerator Laboratory)

Dark Matter: ULDM

• Erwin Tanin (Johns Hopkins University)

Dark Matter: Model Building

• Robert McGehee (University of Minnesota)

Dark Matter: Model Building

• Julian Heeck
• Julian Heeck

Dark Matter: PBH and Atomic DM

• Yue Zhao
• Yue Zhao

Dark Matter: Astrophysical Probes

• Benjamin Lehmann (Massachusetts Institute of Technology)

Dark Matter: ULDM and Freeze-in

• Matthew Sullivan (Brookhaven National Laboratory)

Dark Matter: WIMPs, DM Simulation and ML

• Barmak Shams Es Haghi (University of Texas at Austin)

509. Implications of purity constraints on light higgsinos

Stephen Martin

13/05/2024, 14:00

Dark 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...

652. New Techniques in Dark Matter Direct Detection

Ben Lillard (University of Oregon)

13/05/2024, 14:00

Dark 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,...

386. Cosmic Ray Boosted Dark Matter at IceCube

Christopher Cappiello

13/05/2024, 14:15

Dark 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...

417. Search for emerging jets

Claire Savard (University of Colorado Boulder (US))

13/05/2024, 14:15

Dark 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...

487. Boosted Dark Matter Resonant Scattering

Zachary Orr (Colorado State University)

13/05/2024, 14:30

Dark 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...

574. Discovering Minimal Dark Matter at Muon Colliders

Rodolfo Capdevilla (Fermi National Accelerator Laboratory)

13/05/2024, 14:30

Dark 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...

457. A Global Fit of Non-Relativistic Effective Dark Matter Operators Including Solar Neutrinos

Neal Avis Kozar

13/05/2024, 14:45

Dark 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...

667. Light Dark Portals at a High Energy Muon Collider

Sagar Airen

13/05/2024, 14:45

Dark 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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13/05/2024, 15:00

358. Detecting Rare Species of Dark Matter with Terrestrial Detectors

Anupam Ray

13/05/2024, 15:00

Dark 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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13/05/2024, 15:15

624. Optimal antiferromagnets for dark matter detection

Shashin Pavaskar

13/05/2024, 15:15

Dark 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...

408. Search for dark photons decaying to lepton jets with the CMS experiment

Prof. Paul Karchin (Wayne State University (US))

13/05/2024, 16:00

Dark 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...

378. Shining Light on the Dark Matter Problem With LZ

Matthew Szydagis

13/05/2024, 16:00

Dark 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...

382. Search for Dark Matter Produced in Association with a Resonant Bottom-Quark Pair

Erdem Yigit Ertorer (Carnegie-Mellon University (US))

13/05/2024, 16:15

Dark 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...

603. The Photo Detection Units of the DarkSide-20k experiment for WIMPs direct detection

Pablo Kunze (Gran Sasso Science Institute)

13/05/2024, 16:15

Dark 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...

568. Dark Matter searches with photons at the LHC

Subhojit Roy (Argonne National Laboratory)

13/05/2024, 16:30

Dark 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...

628. The Migdal Effect in Semiconductors for the Effective Field Theory of Dark Matter Direct Detection

Megan McDuffie (Stony Brook University)

13/05/2024, 16:30

Dark 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.

630. (Super)heavy $Z'$-Portal Dark Matter Scenario and Complementarity between Direct Dark Matter Detection Experiments and $Z'$ Boson Searches at the LHC

PUJA DAS

13/05/2024, 16:45

Dark 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...

413. Status of, and recent data results from, the LHC Run 3 milliQan detector

Matt Joyce (Ohio State University (US))

13/05/2024, 16:45

Dark 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.

570. Multiphonon Processes in Spin-Dependent Dark-Matter Scattering

Bethany Suter (UC Berkeley)

13/05/2024, 17:00

Dark 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...

351. New Physics Results from the FASER Experiment

Ansh Sameer Desai (University of Oregon (US))

13/05/2024, 17:00

Dark 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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13/05/2024, 17:15

484. The Light Dark Matter eXperiment (LDMX)

Jessica Pascadlo (University of Virginia)

13/05/2024, 17:15

Dark 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...

743. MagLev for Dark Matter

Zhen Liu

14/05/2024, 14:00

Dark 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...

549. Probing Heavy Asymmetric Dark Matter with the Glashow Resonance

Qinrui Liu (Queen's University)

14/05/2024, 14:00

Dark 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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14/05/2024, 14:15

543. Phase Transition of Conformal Freeze-In Dark Matter

Lillian Luo

14/05/2024, 14:15

Dark 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...

540. Pure Glue Dark Sector Cosmology

Riku Mizuta (TRIUMF / University of British Columbia)

14/05/2024, 14:30

Dark 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...

722. Forbidden Conformal Dark Matter at a GeV

Steven Ferrante (Cornell University)

14/05/2024, 14:45

Dark 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...

668. Probing (ultra-) light Dark Matter Using Mössbauer Spectroscopy

Abhishek Banerjee (University of Maryland)

14/05/2024, 14:45

Dark 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...

402. Electron Trap as a meV Axion and Dark Photon Dark Matter Detector

Yawen Xiao

14/05/2024, 15:00

Dark 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...

723. Recycling: A New Mechanism for Producing Ultra Heavy Particle Dark Matter

Thomas Gehrman (University of Oklahoma)

14/05/2024, 15:00

Dark 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...

587. Atom interferometer detection of dark matter

Yufeng Du (California Institute of Technology)

14/05/2024, 15:15

Dark 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....

496. Higgsino Signals from White Dwarfs in the Inner Galaxy

Javier Fernández Acevedo (SLAC)

14/05/2024, 15:15

Dark 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...

505. Weaker gravity and thermal relic abundance

Matthew Sullivan (Brookhaven National Laboratory)

14/05/2024, 16:00

Dark 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...

746. The Power of the Dark Sink

Robert McGehee (University of Minnesota)

14/05/2024, 16:15

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...

593. Indirect searches for dark matter in the time domain

Ngan Nguyen

14/05/2024, 16:30

Dark 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.

620. Signals of ALP-Mediated Dark Matter and its UV Completions

John Coffey

14/05/2024, 16:45

Dark 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...

472. QCD Axion-mediated Dark Matter

Pankaj Munbodh (University of California Santa Cruz)

14/05/2024, 17:00

Dark 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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14/05/2024, 17:15

596. Close encounters of the primordial kind: a new observable for primordial black holes as dark matter

Benjamin Lehmann (Massachusetts Institute of Technology)

15/05/2024, 14:00

Dark 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...

636. Feedback in the dark: a critical examination of CMB bounds on primordial black holes

Gregory Suczewski

15/05/2024, 14:15

Dark 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...

477. Dissipative Dark Matter in a Slow Cooker: Delayed Dark Clumps and Primordial Black Holes

J. Leo Kim (Queen's University)

15/05/2024, 14:30

Dark 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...

663. Constraining atomic dark matter with the high-redshift UV luminosity function

Jared Barron

15/05/2024, 14:45

Dark 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...

579. Atomic Dark Matter Capture in the Earth

Keegan Humphrey (University of Toronto)

15/05/2024, 15:00

Dark 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...

592. Lyman-alpha Constraints on Atomic Dark Matter with N-body Simulation

Linda Yuan

15/05/2024, 15:15

Dark 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...

422. Probing the pulsar explanation of the Galactic-Center GeV excess using continuous gravitational-wave searches

Yue Zhao

15/05/2024, 16:00

Dark 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...

690. Optimal Celestial Bodies for Dark Matter Detection

Joshua Tong (Stanford University)

15/05/2024, 16:15

Dark 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...

590. Effects of low boosted dark matter annihilation on galactic signals

Steven Clark (Hood College)

15/05/2024, 16:30

Dark 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...

656. Dark Kinetic Heating of Exoplanets and Brown Dwarfs

Aidan Reilly

15/05/2024, 16:45

Dark 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...

539. Milky Way White Dwarfs as Sub-GeV to Multi-TeV Dark Matter Detectors

Lillian Santos-Olmsted

15/05/2024, 17:00

Dark 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...

554. Constraining bosonic asymmetric dark matter with neutron star mass-radius measurements

Nathan Rutherford (University of New Hampshire)

15/05/2024, 17:15

Dark 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...

534. Dark Matter Searches on a Photonic Chip

Christina Gao

16/05/2024, 14:00

Dark 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...

473. Boosted Dark Photons - Looking for Light Dark Matter with Dark Light

R. Andrew Gustafson (Virginia Tech)

16/05/2024, 14:15

Dark 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...

476. Thermal effects in freeze-in neutrino dark mater production

Dr Michele Lucente (University of Bologna)

16/05/2024, 14:30

Dark 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...

648. Dark Matter Production During Warm Inflation via Freeze-In

Barmak Shams Es Haghi (University of Texas at Austin)

16/05/2024, 14:45

Dark 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...

416. Freeze-in Cogenesis of Asymmmetric Dark Matter

Michael Shamma (TRIUMF)

16/05/2024, 15:00

Dark 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...

401. Majoron echoes of Leptogenesis

Swapnil Dutta

16/05/2024, 15:15

Dark 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...

546. A WIMP Status Report: Constraints and Discovery Prospects for Singlet-Doublet Dark Matter

Evan Petrosky

16/05/2024, 16:00

Dark 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...

471. The Inner Dark Matter Distribution in Hydrodynamic Simulations

Abd El Aziz Hussein (Massachusetts Institute of Technology)

16/05/2024, 16:15

Dark 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...

469. Kinetic Simulations of Collisionless Shock Formation in the Dark Sector

Pierce Giffin

16/05/2024, 16:30

Dark 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...

523. Sweeping the Dust Away: An unbiased map of the Milky Way's gravitational potential using unsupervised ML

Eric Putney (Rutgers, The State University of New Jersey)

16/05/2024, 16:45

Dark 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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661. Dark matter searches from accelerators and non-direct detection experiments

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.

492. Dark Matter Subhalo Abundance in the Solar Neighborhood and Its Effect on Direct Detections

Xiuyuan Zhang

Dark 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...

387. Feasibility study to hunt for dark matter from a Higgs boson with displaced and emerging jets

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....

334. Into the Elusive Universe with Space Quantum Sensors

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...

398. Light dark matter, rare $B$ decays with missing energy in $L_{\mu}-L_{\tau}$ model

Suchismita Sahoo

Dark 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...

520. Non decoupling dark matter

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...

368. The Power of the Dark Sink

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...

655. Vector Wave Dark Matter and Terrestrial Quantum Sensors

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...