-
Stuart Brown, Tommaso Treu24/03/2025, 07:55
-
Michael Turner24/03/2025, 08:00
-
Josh Frieman24/03/2025, 08:25
-
Risa Wechsler24/03/2025, 08:50
-
Lloyd Knox24/03/2025, 09:15
-
Jo Bovy24/03/2025, 10:10
-
Stefano Profumo24/03/2025, 10:35
The possibility that some of the black holes in the universe have a non-stellar origin and that they play a significant role in cosmology - including being some or all of the dark matter - is both timely and intriguing. I will review the status of the field, describe search strategies and future prospects for detection across many decades in mass, discuss how primordial black holes could seed...
Go to contribution page -
Mariangela Lisanti24/03/2025, 11:00
-
Dr Anna Nierenberg24/03/2025, 11:25
Strong gravitational lensing can provide direct insight into the nature of dark matter and the structures it forms on small scales. In a strong gravitational lens, multiple images of a background source appear due to deflection by foreground massive structures. In galaxy and cluster-scale strong gravitational lenses, low-mass perturbations due to small-scale structure such as low-mass dark...
Go to contribution page -
Elisa Gouvea Mauricio Ferreira24/03/2025, 11:50
In this talk, I will discuss the latest efforts to constrain the mass of the ultra-light dark matter models, focusing on the current bounds of the fuzzy dark matter (FDM) model. I will show how we can use the different predictions of this model and different astrophysical systems to put the strongest bounds to date on the mass of this ultra-light axion, also showing the incompatibilities...
Go to contribution page -
Hitoshi Murayama24/03/2025, 13:15Talk
-
Kathryn Zurek24/03/2025, 13:40Talk
-
Surjeet Rajendran24/03/2025, 14:05Talk
While the axion is the most popular solution to the strong CP problem, it is sometimes claimed that the strong CP problem can be solved by imposing parity or CP as a symmetry of the theory or perhaps to ignore the strong CP problem completely by fine tuning the theta angle. For these solutions to work, the theta angle has to be a parameter of the theory. I will argue that this is incorrect -...
Go to contribution page -
Jonathan Lee Feng (University of California Irvine (US))24/03/2025, 14:30Talk
The search for dark matter and dark sectors at colliders will be reviewed. Special attention will be paid to both heavy and light dark matter scenarios in which the dark matter is a thermal relic, but other possibilities that inspire interesting collider searches will also be included.
Go to contribution page -
Tim M.P. Tait (University of California, Irvine)24/03/2025, 14:55Talk
I will discuss how the assumption of a standard cosmological history can play a large role in the production of dark matter in the early Universe, and explore a few examples in which a nonstandard history can point to radically different parameters and/or models of dark matter to explain its observed abundance than one would have inferred from the standard assumptions about the conditions in...
Go to contribution page -
Elena Aprile24/03/2025, 15:50
-
Cristiano Galbiati24/03/2025, 16:15
-
Sunil Golwala24/03/2025, 16:40
-
Rouven Essig24/03/2025, 17:05
-
Prof. Katherine Freese (University of Texas)24/03/2025, 17:30
Paleo-detectors are a proposed experimental technique to search for dark matter (DM). In lieu of the conventional approach of operating a tonne-scale real-time detector to search for DM-induced nuclear recoils, paleo-detectors take advantage of small samples of naturally occurring rocks on Earth that have been deep underground (≳5 km), accumulating nuclear damage tracks from recoiling nuclei...
Go to contribution page -
Vera Gluscevic (University of Southern California)25/03/2025, 08:00
Cosmological observables, from the Lyman-alpha forest to Milky Way substructure, offer unique avenues for testing new physics. I will review the status of the recent early-universe and late-universe searches for the identity of dark matter and for new physics in the neutrino sector, summarizing the best current limits on scattering between dark matter and baryons and neutrino self-scattering....
Go to contribution page -
Yifan Lu (UCLA)25/03/2025, 08:15
The origin of high-redshift supermassive black holes (SMBHs) has been an intriguing mystery in astronomy and cosmology. Recent observations from James Webb Space Telescope further challenged our previous understanding about their formation mechanism. A promising solution to this problem is the direct collapse black holes from primordial metal-free clouds, which often requires stringent...
Go to contribution page -
Andrew Benson25/03/2025, 08:30
Many astrophysical probes of dark matter (strong lensing, perturbations to stellar streams, abundances and structure of dwarf galaxies) are sensitive to the number and properties of dark matter subhalos. Accurate inference from observations requires reliable and versatile models of subhalo populations. I will describe our latest generation of subhalo population models, which provide fast and...
Go to contribution page -
Daniel Gilman25/03/2025, 08:45
The JWST lensed quasar dark matter survey has delivered precise measurements of image flux ratios in 31 quadruply-imaged quasars. The compact emission surrounding the background AGN, which is now accessible with JWST, experiences significant perturbation from dark matter subhalos and field halos along the entire line of sight. As a result, this dataset is a powerful tool for characterizing the...
Go to contribution page -
Ethan Nadler (UC San Diego)25/03/2025, 09:00
I will present COZMIC, a suite of over 100 cosmological zoom-in simulations with initial conditions beyond CDM. COZMIC spans initial conditions for warm, fuzzy, and interacting dark matter models. The shape of the linear matter power spectrum, P(k), is imprinted on the corresponding subhalo populations. Modeling this effect improves fuzzy and interacting dark matter bounds from the Milky Way...
Go to contribution page -
Robin Ma'ila Anthony-Petersen25/03/2025, 09:15
Indirect dark matter detection in the MeV energy range is notably constrained by our limited observing sensitivity in this regime. The Compton Spectrometer and Imager (COSI), selected as a NASA Small Explorer satellite with an expected launch in 2027, will offer new potential to push these boundaries. COSI is a gamma-ray telescope that will survey the sky from 0.2-5 MeV with excellent energy...
Go to contribution page -
Kevork Abazajian (University of California, Irvine)25/03/2025, 09:30
At dwarf galaxy scales and smaller, the thermal and kinetic properties of dark matter influence the growth of cosmological and galactic structures. These effects are observable through various methods, including dwarf galaxy counts, the Lyman-alpha forest, and strong lensing. I will review the current constraints and evidence for a small-scale cutoff in structure formation, consistent with...
Go to contribution page -
Philip Von Doetinchem (University of Hawaii at Manoa)25/03/2025, 10:15
The precise measurement of cosmic antinuclei is an important means for identifying the nature of dark matter and other beyond-standard-model physics. Recent years have shown that identifying the nature of dark matter with cosmic positrons and antiprotons is challenging and has led to an increased interest in cosmic antideuteron and antihelium searches. Antideuterons and antihelium nuclei may...
Go to contribution page -
Simeon Bird25/03/2025, 10:30
I will discuss our recent analysis of the LIGO GW catalogue that suggests two separate, unmixed, BH populations, potentially with different spatial distributions or origins. I will also discuss suggestive results from a recent analysis of microlensing towards the galactic bulge.
Go to contribution page -
Isabel Sands (Caltech)25/03/2025, 10:45
In this talk, I present the first results from a new suite of Feedback in Realistic Environments (FIRE) simulations in which the dark matter is subject to a long-range self-interaction. This self-interaction takes the form of an attractive Yukawa potential parametrized by the strength of the force and its screening length, which we simulate on kiloparsec to megaparsec scales. We simulate...
Go to contribution page -
Peter Graham (Stanford)25/03/2025, 11:00
-
Lina Necib (MIT)25/03/2025, 11:15
In this talk, I will explore the interfacing of simulations, observations, and machine learning techniques to construct a detailed map of Dark Matter in the Milky Way, focusing on the Galactic Center/Halo and dwarf galaxies. For the Galactic Halo, I will present a recent work that reveals a decline in the stellar circular velocity, inducing tensions with established estimates of the Milky...
Go to contribution page -
Makana Silva (Los Alamos National Laboratory)25/03/2025, 11:30
Primordial black holes (PBHs) in the mass range $10^{17} - 10^{22} \, \text{g}$ are a promising candidate for the dark matter. At the lower end of this range, PBHs emit Hawking radiation with temperatures $T_H \gtrsim 100 \, \text{keV}$, allowing for electron-positron pair production and making their radiation detectable in high-energy surveys. To interpret these signals, it is crucial to...
Go to contribution page -
Przemek Mróz25/03/2025, 11:45
The idea that dark matter may be composed of dark compact objects, such as primordial black holes, was revived following the discoveries of gravitational waves from mergers of massive black holes by the LIGO and Virgo detectors.
If such black holes existed in large numbers in the Milky Way dark matter halo, they would cause long-timescale gravitational microlensing events lasting years....
Go to contribution page -
Kyle Leach25/03/2025, 13:00
-
Tim Linden25/03/2025, 13:15
Observations by AMS-02 on the International Space Station have tentatively detected approximately 10 events that are consistent with antihelium nuclei. This observation is of significant interest due to the difficulty in producing any detectable antihelium flux through standard model interactions. In this talk, I will discuss the state of these observations, focusing on detailed theoretical...
Go to contribution page -
Yu-Dai Tsai (University of California, Irvine)25/03/2025, 13:30
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...
Go to contribution page -
Theo Hugues (Queen's University)25/03/2025, 13:45
This talk describes hardware upgrades for the DEAP-3600 dark matter direct detection experiments, which uses over 3 tonnes of liquid argon (LAr) as a scintillation target and is located 2 km underground at SNOLAB in Sudbury, Canada. These upgrades aim to maximize the detector's sensitivity to WIMP dark matter by removing the dominant sources of background. Operations with the upgraded detector...
Go to contribution page -
John Silverman25/03/2025, 14:00
-
zachary picker (UCLA)25/03/2025, 14:45
I will discuss the formation of macroscopic dark matter from interacting dark sectors. Specifically,Fermi balls can form in dark sectors with a heavy fermion and a light scalar mediated Yukawa force. I'll discuss the behavior of these Fermi balls and the conditions under which they will collapse to form primordial black holes. Based on arXiv:2411.17074.
Go to contribution page -
Chris Kouvaris25/03/2025, 15:00
In an early matter phase of the Universe, perturbations can
Go to contribution page
grow and lead to the formation of primordial black holes that can account
fully or partially for the observed dark matter abundance. During
formation, such primordial black holes can produce gravitational waves
that can be detected in interferometers or in Pulsar Timing Arrays. I'll
present results from numerical simulations... -
Volodymyr Takhistov25/03/2025, 15:15
The Universe could be filled with faint relics of new fundamental processes—diffuse backgrounds of neutrinos including from dark stars, axions, and even magnetic monopoles. These cosmic whispers offer intriguing portals into physics beyond the Standard Model, including diffuse axion background that can appear from axion star explosions, diffuse neutriono background that can appear from dark...
Go to contribution page -
Manoj Kaplinghat25/03/2025, 15:30
I will discuss the probing of gravothermal collapse of dark matter halos through stellar streams and strong lensing systems.
Go to contribution page -
Philip Lu (KIAS)25/03/2025, 15:45
We consider the Friedberg-Lee-Sirlin Q-ball with a renormalizable cubic interaction. This attractive Yukawa interaction balances the quartic interaction and results in more compact Q-balls with a maximum stable charge. We show that our numerical simulations match our analytic calculations of the maximum charge. Additionally, we consider the fate of these unstable Q-balls with excess charge,...
Go to contribution page -
Prof. Ning Zhou (Shanghai Jiao Tong University (CN))26/03/2025, 08:00
Located at the China Jinping Underground Laboratory, the PandaX experiment employs xenon as a target to detect rare physics signals, such as dark matter and neutrinos. The PandaX-4T, the latest generation detector featuring a 4-ton xenon target volume, commenced data collection in 2020. One of our objectives is to unravel the nature of dark matter by investigating various potential signatures....
Go to contribution page -
Spencer Haskins26/03/2025, 08:15
The current status of the search for dark matter from the DEAP-3600 experiment will be presented, along with a detailed description of the analysis techniques. DEAP-3600 is a direct detection experiment that uses 3.3 tonnes of liquid argon as its target material. Located over 2 km underground at SNOLAB in Sudbury, Canada, the detector is designed to observe scintillation light from nuclear...
Go to contribution page -
Derek Cranshaw26/03/2025, 08:30
To continue to make progress in the global effort to understand the nature of dark matter, it is essential to further explore the spin-dependent WIMP-nucleon interaction parameter space. The PICO-40L bubble chamber is a dark matter direct detection experiment located at the SNOLAB underground research facility outside Sudbury, Canada. The abundance of non-zero-spin fluorine nucleons in the...
Go to contribution page -
Daniel Kodroff26/03/2025, 08:45
LUX-ZEPLIN (LZ) is a direct detection dark matter experiment located nearly a mile underground at the Sanford Underground Research Facility in South Dakota, USA employing a 7 tonne active volume of liquid xenon in a dual-phase time projection chamber (TPC). It is further surrounded by a three-component veto system: an instrumented 2-tonne liquid xenon skin, a near-hermetic gadolinium-loaded...
Go to contribution page -
Alessio Caminata26/03/2025, 09:00
The DarkSide program at Laboratori Nazionali del Gran Sasso (LNGS) aims to detect dark matter WIMP particles using a dual-phase Liquid Argon (LAr) Time Projection Chamber (TPC). Since 2015, the DarkSide-50 detector, featuring a 50-kg active mass dual-phase LAr TPC filled with low-radioactivity argon sourced from underground, has produced world-class results for both low-mass and high-mass...
Go to contribution page -
Zihao Xu26/03/2025, 09:15
The primary goal of the XENONnT experiment is to search for weakly interacting massive particles (WIMPs), a leading theoretical candidate for dark matter. In its second science run, XENONnT accumulated a total live time of ~186 days. During this run, the radon removal system was operated in high-flow mode, achieving a significant reduction of about 50% in the concentration of Rn-222 compared...
Go to contribution page -
Chami Amarasinghe26/03/2025, 09:30
In this talk I will describe analyses of two of the most notable backgrounds in the recent LUX-ZEPLIN (LZ) dark matter search: $^{124}$Xe double L-shell capture decays and $^{214}$Pb daughters of $^{222}$Rn. First, we observe that $^{124}$Xe double L-shell capture decays have charge yields deviating 30% from standard electronic recoil (ER) backgrounds, resulting in increased overlap with...
Go to contribution page -
Mr Samuel Wong (Stanford University)26/03/2025, 09:45
While much supersymmetric WIMP parameter space has been ruled out, one remaining important candidate is Higgsino dark matter. The Higgsino can naturally realize the "inelastic dark matter" scenario, where the scattering off a nucleus occurs between two nearly-degenerate states, making it invisible to WIMP direct detection experiments if the splitting is too large to be excited. It was realized...
Go to contribution page -
Shubham Pandey (University of Minnesota, Twin Cities)26/03/2025, 10:30Talk
The Super Cryogenic Dark Matter Search (SuperCDMS) experiment, currently being installed 2 km underground at SNOLAB Canada, is a collaborative effort to search for low-mass dark matter particles (<10 GeV/c²) via direct detection. The experiment utilizes 24 silicon and germanium crystals instrumented with either phonon sensors, called HV detectors, or, phonon and charge sensors, called iZIP...
Go to contribution page -
Gabriella Cataldi (INFN LNGS)26/03/2025, 10:45Talk
The SABRE experiment aims to deploy arrays of ultra-low-background NaI(Tl) crystals to carry out a model-independent search for dark matter through the annual modulation signature. SABRE will be a double-site experiment, consisting of two separate detectors in the two terrestrial hemispheres, reliant on a joint crystal R&D activity. The SABRE North detector will be installed underground at...
Go to contribution page -
María Luisa Sarsa (University of Zaragoza)26/03/2025, 11:00Talk
The ANAIS experiment aims to verify or refute in a model independent way with a high statistical significance the longstanding positive annual modulation signal observed by DAMA/LIBRA. For this goal, ANAIS experiment uses the same target, NaI(Tl), and technique, the analysis of the annual modulation in the scintillation signal observed at very low energy. ANAIS−112 consists of nine modules,...
Go to contribution page -
Dr Pedro Vinicius Guillaumon26/03/2025, 11:15Talk
CRESST-III (Cryogenic Rare Event Search with Superconducting Thermometers) installed at Laboratori Nazionali del Gran Sasso, is looking to directly detect dark matter particles scattering off CaWO4 target nuclei in cryogenic detectors. Thanks to its energy threshold O(30 eV), CRESST-III is particularly suitable in probing sub-GeV DM masses. This contribution presents an overview of CRESST-III,...
Go to contribution page -
Kyle Kennard26/03/2025, 11:30Talk
The SuperCDMS-HVeV (High-Voltage with eV resolution) program is an
Go to contribution page
R&D project focused on developing detectors with high energy resolution to search for low-mass dark matter (≲ 1 GeV/c2), study charge-transport in cryogenically-cooled crystals, and probe unclassified backgrounds at low energy. The program utilizes gram-scale silicon detectors instrumented with TES (transition-edge... -
Karoline Julia Schaeffner (Max-Planck Institute for Physics)26/03/2025, 11:45Talk
A method for distinguishing dark matter signals from detector background is looking for an annual modulation signal caused by the seasonal variation of the Earth’s velocity with respect to the sun and, thus, the dark matter halo.
Go to contribution page
The DAMA/LIBRA experiment, a pioneer using such modulation as DM signature, observes a modulated signal rate with a very high statistical significance with the... -
James Ryan26/03/2025, 12:00Talk
Crystal-based detectors like those of SuperCDMS SNOLAB provide the most sensitive searches for a variety of dark matter candidates. Low-noise environments and transition-edge sensors (TES) for phonon detection have enabled the measurement of interaction energies with eV-scale resolution over a large dynamic range. As we approach the fundamental limitations of these detectors, however, there is...
Go to contribution page -
Phillip Urquijo (The University of Melbourne)26/03/2025, 12:15Talk
SABRE is an international collaboration that will operate similar particle detectors in the Northern (SABRE North) and Southern Hemispheres (SABRE South). This innovative approach distinguishes possible dark matter signals from seasonal backgrounds, a pioneering strategy only possible with a southern hemisphere experiment. SABRE South is located at the Stawell Underground Physics Laboratory...
Go to contribution page -
Danielle Norcini (Johns Hopkins University)26/03/2025, 13:30
The DAMIC-M (DArk Matter In CCDs at Modane) experiment will use skipper CCDs to search for low mass (sub-GeV) dark matter underground at the Laboratoire Souterrain de Modane (LSM). With about 1kg of silicon target mass and sub-electron energy resolution, the detector will surpass the exposure and threshold (eV-scale) of previous experiments. As such, DAMIC-M will have world-leading sensitivity...
Go to contribution page -
Andre Frankenthal (Princeton University (US))26/03/2025, 13:45
PADME is a fixed-target, missing-mass experiment originally designed to search for dark photons using a beam of positrons with energy up to 500 MeV. The detector, located at the Laboratori Nazionali di Frascati, in Italy, has already collected initial physics data over the last few years. More recently, the experiment has been adapted to perform a direct search for on-shell X17 production....
Go to contribution page -
Shawn Scott Westerdale (University of California Riverside (US))26/03/2025, 14:00
DarkSide-LowMass is a tonne-scale liquid argon time projection chamber (LArTPC) being planned by the Global Argon Dark Matter Collaboration (GADMC) to search for WIMP-like dark matter with masses below 10 GeV/c^2, achieving low thresholds with a design optimized for an electron-counting analysis. Building upon the success of DarkSide-50's light dark matter search, DarkSide-LowMass will aim to...
Go to contribution page -
Chiara Capelli (University of Zurich)26/03/2025, 14:15
The XENONnT experiment searches for weakly interacting massive particles scattering off xenon nuclei with a dual-phase time projection chamber. With 5.9 tonnes of active mass and an unprecedented low level of background, the detector enables the searches of several rare-event physics channels. In particular XENONnT set stringent limits on other dark matter candidates interacting through...
Go to contribution page -
Prof. Scott Hertel (U. Massachusetts, Amherst)26/03/2025, 14:30
TESSERACT is currently in an R&D and planning phase, funded under the DOE Dark Matter New Initiatives program. This phase will result in two fully defined experiments (HeRALD and SPICE). Collaboration with French groups has recently been formalized, bringing a third technology to the suite. We will provide an overview of this general TESSERACT program as we transition to `project’ phase. In...
Go to contribution page -
Xinning Zeng26/03/2025, 14:45
PandaX-4T is a dual-phase liquid xenon (LXe) time projection chamber (TPC) detector that operates in China Jinping Underground Laboratories (CJPL). Searches for novel electronic recoil signals (NERS) from solar axions, axion-like particles (ALPs), dark photons, neutrinos with an enhanced magnetic moment and absorption of fermionic dark matter have attracted increasing attention in PandaX-4T...
Go to contribution page -
Ana Martina Botti (Fermilab), SENSEI Collaboration26/03/2025, 15:00
SENSEI (Sub-Electron Noise Skipper Experimental Instrument) is the first experiment to implement silicon skipper CCDs to search for dark matter. Skipper-CCDs can resolve single electrons in each of millions of pixels, which allows for the low energy threshold required to detect sub-GeV dark matter interacting with electrons. SENSEI recently measured the lowest event rates containing one...
Go to contribution page -
Yongheng Xu26/03/2025, 15:15
Cosmic rays in the Milky Way may collide with sub-GeV dark matter, imparting sufficient kinetic energies to produce detectable signals in liquid xenon
Go to contribution page
detectors. In this talk, I will present a new analysis on light dark matter accelerated by cosmic rays (CRDM) in the Milky Way, using data from the LUXZEPLIN (LZ) experiment, a dual-phase xenon detector located at the Sanford
Underground... -
Dr Ako Jamil (Princeton University)26/03/2025, 16:00
The DarkSide-20k experiment represents the latest phase of the Global Argon Dark Matter Collaboration, leveraging expertise from previous argon-based detectors. This effort is focused on constructing a dual-phase liquid argon time projection chamber (LAr-TPC) that will deploy 100 tonnes of underground argon outfitted with silicon photomultiplier (SiPM) arrays for precise light detection....
Go to contribution page -
Michael Williams (Lawrence Berkeley National Laboratory)26/03/2025, 16:15
The TESSERACT collaboration will search for dark matter particles below the proton mass through interactions with two types of novel, ultra-sensitive detectors. These detectors, SPICE and HeRALD, aim to provide leading sensitivities to low-mass dark matter candidates. In this talk I will present on the recent progress made toward reaching this goal. First, I will discuss the recent deployment...
Go to contribution page -
Hugh Lippincott26/03/2025, 16:30
The Scintillating Bubble Chamber (SBC) collaboration is developing novel particle detectors sensitive to low-energy (sub-keV) nuclear recoils by combining existing bubble chamber technology with liquid noble detectors. This approach leverages the insensitivity to electronic recoils characteristic of bubble chambers alongside the scintillation yield from a liquid noble active medium. SBC aims...
Go to contribution page -
Prof. Daniel Akerib (SLAC)26/03/2025, 16:45
The XLZD Collaboration is developing an international experiment to search for WIMP dark matter down to the systematic limit imposed by astrophysical neutrinos. The experiment will be based on the heritage detector designs now operating at the 10-tonne scale implemented by the XENONnT and LUX-ZEPLIN collaborations, and further informed by work being carried out by the DARWIN R&D collaboration....
Go to contribution page -
Dr Jingke Xu (Lawrence Livermore National Laboratory, USA)26/03/2025, 17:00
We will discuss the potential benefits of xenon doping in liquid argon for dark matter search experiments. Notably, doping liquid argon with xenon at the percent level is predicted to enhance the production and collection of electroluminescence light in a dual-phase argon detector, as well as improve its spatial resolution and temporal stability. At LLNL, we have constructed a test stand...
Go to contribution page -
Carsten Krauss (University of Alberta)26/03/2025, 17:15
The bubble chamber approach of looking for spin dependent interactions between fluorine and dark matter has been quite impactful so far. The PICO collaboration is in the process of deploying PICO-500, a large 250 litre chamber filled with C3F8 at SNOLAB with an scheduled start of commissioning in late 2026. We will report on the design progress and the production aspects...
Go to contribution page -
Mr Chen Ding (Brown University)26/03/2025, 17:30
WIMP dark matter particles are expected to interact with liquid xenon producing nuclear recoils (NRs). It is critical for dark matter experiments to have accurate calibration of the detector response and correct modeling of xenon microphysics. The Migdal effect theorizes that when an atom is recoiling, an electron could be emitted, leading to ionization and greater energy deposition. This...
Go to contribution page -
Kerstin Perez26/03/2025, 17:45
The International Axion Observatory (IAXO) is a next-generation axion helioscope aiming at a sensitivity to the axion-photon coupling down to ~$1.5 \times 10^{-12}$ GeV$^{-1}$, approximately 1.5 orders of magnitude beyond current helioscopes, across a wide mass range up to ~0.25 eV. IAXO will probe QCD axions in the 1 meV∼1 eV mass range, where they could constitute all or part of the dark...
Go to contribution page -
Dr Nathan Saffold (Fermilab)27/03/2025, 08:00
The DarkNESS (Dark Matter Nano-satellite Equipped with Skipper Sensors) mission will deploy a skipper-CCD CubeSat Observatory to search for dark matter (DM) from Low Earth Orbit. During its time in orbit, DarkNESS will observe the Galactic Center to probe O(keV) X-rays from decaying DM models, as well as perform a direct search for electron recoils from strongly-interacting sub-GeV DM. The...
Go to contribution page -
Scott Kravitz27/03/2025, 08:15
We present the crystalline xenon time projection chamber (TPC), a promising novel technology for next-generation dark matter searches. Initial tests have established that it maintains many of the benefits of the liquid xenon TPC while also effectively excluding radon, the dominant background in currently-running xenon dark matter experiments such as LZ. This offers the potential for greatly...
Go to contribution page -
Ryan Linehan (Fermi National Accelerator Laboratory, USA)27/03/2025, 08:30
Recent measurements have demonstrated that superconducting qubit decoherence is affected by radiation. As a result, many groups around the world are working to better understand the relationship between different types of radiation and qubit response. This crucial to quantum error correction because radiation can cause correlated loss of information across multiple qubits on a chip, defeating...
Go to contribution page -
Maurice Garcia-Sciveres (Lawrence Berkeley National Lab. (US))27/03/2025, 08:45
A new experimental setup for low mass particle dark matter searches has been installed at the Kamioka underground facility, with an overburden of 2700 m.w.e. Ambient gamma and neutron background levels have measured. A dilution refrigerator is operational with gamma and neutron shielding under construction. Geant simulations predict backgrounds of 10 events/kg/keV/day with this setup. Multiple...
Go to contribution page -
Dr Peter Sorensen (LBL / Berkeley Lab)27/03/2025, 09:00
Dual-phase liquid xenon TPCs have the potential to discover sub-GeV dark matter. In this low-energy regime, the limiting background is due to the instrument itself in the form of delayed electron and photon emission. In this talk, we present new data explaining the mechanism for delayed emission. Furthermore, we describe steps towards a prototype xenon TPC with significantly reduced delayed...
Go to contribution page -
Florian Reindl (Vienna University of Technology (AT))27/03/2025, 09:15
In the last years, rare event searches hunting light dark matter particles or neutrinos via coherent elastic neutrino-nucleus scattering (CEvNS) have pushed their thresholds down to eV-scales. However, with the lower thresholds, the experiments started to measure events above their expected background level. These low-energy EXCESSES typically steeply rise towards low energies and...
Go to contribution page -
Xinran Li (Lawrence Berkeley national laboratory)27/03/2025, 09:30
The characteristic energy of a relic dark matter interaction with a detector scales strongly with the putative dark matter mass. Consequently, experimental search sensitivity at the lightest masses will always come from interactions whose size is similar to noise fluctuations and low energy backgrounds in the detector. In this talk, we will tackle this problem under two essential scenarios,...
Go to contribution page -
Sven Vahsen (University of Hawaii (US))27/03/2025, 10:15
The field of direct dark matter detection has recently entered the so-called neutrino fog, meaning that the most sensitive experiments are now detecting significant nuclear event rates caused by coherent scattering of solar neutrinos. Because the nuclear recoil directions for dark matter and neutrinos differ, new types of detectors capable of measuring these directions would have a powerful...
Go to contribution page -
Reza Ebadi27/03/2025, 10:35
Current detection methods for Weakly Interacting Massive Particle (WIMP) dark matter are approaching the so-called "neutrino fog," where irreducible background from solar neutrinos will obscure dark matter signals. To overcome this challenge, directional discrimination of events is critical. We propose developing a diamond-based particle detector that utilizes embedded quantum sensors to...
Go to contribution page -
Diego Ramírez García (University of Zurich)27/03/2025, 10:50
The XENONnT detector, located at Laboratori Nazionali del Gran Sasso, in Italy, utilizes 5.9 tonnes of instrumented liquid xenon in the direct search for weakly-interacting massive particle (WIMP) dark matter. Having achieved unprecedented levels of target purity, it is sensitive to a plethora of signals beyond WIMPs. This talk will present an overview of the experiment and its perfomance in...
Go to contribution page -
Prof. Jason Evans (Shanghai Jiaotong University/TDLI)27/03/2025, 11:05
If dark matter is ultralight, the number density of dark matter is very high and the techniques of zero-temperature field theory are no longer valid. The dark matter number density modifies the vacuum giving it a non-negligible particle occupation number. For fermionic dark matter, this occupation number can be no larger than one. However, in the case of bosons the occupation number is...
Go to contribution page -
Dr Alberto Ressa (INFN Roma1)27/03/2025, 11:20
The Cryogenic Underground Observatory for Rare Events (CUORE) is the first tonne-scale experiment using cryogenic calorimeters. The detector is located underground at the Laboratori Nazionali del Gran Sasso in Italy and consists of 988 TeO2 crystals operated in a dilution refrigerator at a base temperature of about 10 mK. Thanks to the large exposure, sharp energy resolution, segmented...
Go to contribution page -
Andrew Gavin27/03/2025, 11:35
The TRISTAN detector is an upgrade to the KATRIN experiment designed to optimize sensitivity to the spectral distortion caused by keV sterile states. The KATRIN experiment has produced the world leading limits from direct kinematic studies for the neutrino mass and eV scale sterile neutrinos through the precision measurement of the endpoint region of the tritium $\beta$ decay spectrum. After...
Go to contribution page -
Yu-Han Tseng (Yale University)27/03/2025, 12:50Talk
Recent advances in levitated optomechanics have enabled the detection of tiny forces through precise control of microscopic objects in vacuum. These technologies present new experimental platforms to probe weakly coupled phenomena in particle and nuclear physics. I will describe a dark matter search based on optically trapped, femtogram-scale silica nanospheres. In ultra-high vacuum, the...
Go to contribution page -
Mr Brandon Sandoval (Caltech)27/03/2025, 13:05Talk
Next generation "sub-GeV" dark matter searches require new tools and techniques with much improved sensitivity. In particular, the constrained kinematic space of potential interactions suggests that collective excitations like phonons may be the only signature of very low mass dark matter candidates. One promising technology to study these are qubit derived superconducting charge-parity...
Go to contribution page -
Reza Ebadi27/03/2025, 13:20Talk
We introduce GALILEO, a novel experimental approach to detect light dark matter candidates through precision optical interferometry. The method exploits the sensitivity of electro-optical materials, whose refractive indices are modulated by a coherently oscillating dark matter field. Using a high-precision resonant Michelson interferometer as the detection mechanism, GALILEO enables the...
Go to contribution page -
Leonardo Badurina (California Institute of Technology)27/03/2025, 13:35Talk
We explore how recent advancements in the manipulation of single ionic wave packets open new avenues for detecting weak magnetic fields sourced by ultralight dark matter. By leveraging the entanglement between the ion's spin and motional degrees of freedom, proposed trapped-ion matter-wave interferometers enable the measurement of the Aharonov-Bohm phase accumulated by the ion over its...
Go to contribution page -
Carlos Blanco (Princeton University)27/03/2025, 13:50Talk
The age of WIMP-like dark matter direct detection is drawing to a close due to their non-detection at exquisitely sensitive liquid-noble detectors. However, models where the dark matter is lighter than the mass of a proton remain largely inaccessible to existing probes. Recently, molecular targets have emerged as particularly well-suited detector materials to look for this sub-GeV dark matter....
Go to contribution page -
Ritoban Basu Thakur27/03/2025, 14:05Talk
QUAntum LImited PHotons In the Dark Experiment (QUALIPHIDE) utilizes novel receivers and detectors operating in the microwave to far infrared to search of Hidden Photons (HP). Searches with quantum sensing techniques enables exploring new phase space for both HPs and axion like particles as candidates for dark matter. The first version of QUALIPHIDE was done in the microwave with traveling...
Go to contribution page -
Saptarshi Chaudhuri (Princeton University)27/03/2025, 14:20Talk
The Princeton aXion Search (PXS) is a new experiment to search for QCD axion dark matter in the 0.8-2.1 ueV mass range (corresponding to 200-500 MHz frequency range). I describe development into all aspects of the experiment, including solenoidal magnet, cryogenics, amplifiers, and resonators. PXS leverages a strong partnership with the Princeton Plasma Physics Laboratory (PPPL) to build a 5T,...
Go to contribution page -
Kimberly Boddy27/03/2025, 14:35Talk
To be submitted
Go to contribution page -
Michael Tobar27/03/2025, 15:20Axions, Alps, Wisps as dark matterTalk
located at the University of Western Australia in Perth, Australia, the ORGAN (Oscillating Resonant Group AxioN) experiment is a microwave cavity axion haloscope that searches for axions in the 15–50 GHz mass range from the putative axion-photon coupling term g_agg , which began in 2017 [1]. The experiment has undergone several experimental runs, which will be detailed in this presentation...
Go to contribution page -
Cristina Martellini27/03/2025, 15:35
The Belle II experiment has unique reach for a broad class of models that postulate the existence of dark matter particles with MeV—GeV masses. This talk presents recent world-leading physics results from Belle II searches for Z' bosons, axion-like particles, and dark scalars in association with two muons in e+e- collisions; long-lived (pseudo)scalars produced in decays of B-mesons; inelastic...
Go to contribution page -
Tsuguo Aramaki27/03/2025, 15:50
GRAMS (Gamma-Ray and AntiMatter Survey), one of the NASA Physics of the Cosmos missions, is a balloon-borne experiment utilizing a LArTPC (Liquid Argon Time Projection Chamber) detector that is potentially expandable to a future satellite mission. GRAMS aims for both MeV gamma-ray observations and antimatter-based indirect dark matter searches. With a low-cost, large-scale LArTPC detector,...
Go to contribution page -
Erik Lentz (Pacific Northwest National Laboratory)27/03/2025, 16:05
The Axion Dark Matter eXperiment (ADMX) is a direct-detection axion dark matter search operating as one of the Department of Energy (DOE) "Generation 2" dark matter projects. ADMX searches for dark matter axions in the micro-eV mass range using a large (V ~ 100L) high-Q (Q ~ 40,000) electromagnetic cavity threaded by a moderate intensity magnetic field (B ~ 8T) to resonantly convert local halo...
Go to contribution page -
Michael Jewell (Yale University)27/03/2025, 16:20
The Haloscope At Yale Sensitive To Axion CDM (HAYSTAC) experiment is a microwave cavity search which is actively probing QCD axions with masses ≳$10\mu$eV. In this talk, I will present recent results from HAYSTAC's Phase II search for QCD axions between $16.96-19.46\mu$eV. These results are the widest search to date to achieve a quantum enhanced scan rate from a squeezed state reciever and...
Go to contribution page -
Junhui Liao27/03/2025, 16:35
ALETHEIA, standing for A Liquid hElium Time projection cHambEr In dArk matter, is a newly established direct detection project aiming to search for low-mass DM with liquid helium-filled time projection chambers (TPCs). The project was officially launched in 2020 and has made significant progress since then. In this talk, I will mainly demonstrate that a single-phase liquid helium (LHe) TPC is...
Go to contribution page -
Dr Kaliroe Pappas (Columbia University)27/03/2025, 16:50
ABRACADABRA-10cm has had great success as a lumped-element axion dark matter pathfinder experiment. Now, using the electrodynamics of gravitational waves and a simple change of pickup structures, we are using the ABRACADABRA detector to search for high-frequency gravitational wave in the kHz to MHz range. These higher frequencies may indicate signs of in-spiraling primordial black holes, or...
Go to contribution page -
Prof. Jaime Ruz Armendariz (TU Dortmund)27/03/2025, 17:05
We present a novel approach to investigating axions and axion-like particles (ALPs) by studying their potential conversion into X-rays within the Sun’s atmospheric magnetic field. Utilizing high sensitivity data from the Nuclear Spectroscopic Telescope Array (NuSTAR) collected during the
Go to contribution page
2020 solar minimum, along with advanced solar atmospheric magnetic field models, we establish a new limit... -
Lindley Winslow27/03/2025, 17:20
The nature of dark matter remains one of the greatest open questions in physics. The DMRadio program focuses on axions with masses below 1 μeV, a highly motivated parameter space linked to GUT-scale physics and dark matter produced before inflation. Exploring this regime presents unique challenges, requiring large magnets and precision sensing techniques that push beyond the Standard Quantum...
Go to contribution page -
Andrew Sonnenschein (Fermilab)27/03/2025, 17:35
The BREAD Collaboration is conducting R&D towards wide band dish antenna searches for axions using a unique coaxial antenna design which is well suited for deployment in large solenoid magnets and compatible with sub-kelvin detectors. We will discuss the overall BREAD (Broadband Reflector Experiment for Axion Detector) program and its technology development, focusing on plans for detectors in...
Go to contribution page -
Xiaowei OuPoster
The circular velocity curve, one of the first pieces of evidence for dark matter (DM), is a direct probe of the Galaxy’s potential, which allows studies of the nature of DM. Recent large surveys have provided valuable information for determining the Milky Way circular velocity curve.
In this talk, I will describe our recently derived circular velocity curve of the Milky Way out to ~30 kpc,...
Go to contribution page -
Adam HePoster
We present the first analysis of neutrino self-interactions with two new, state-of-the-art Lyman-$\alpha$ likelihoods: an EFT-based likelihood developed from the Sherwood simulation suite, and a compressed likelihood developed from the PRIYA simulation suite. We find that the inclusion of either Lyman-$\alpha$ dataset penalizes the delay in neutrino free-streaming, previously found to be...
Go to contribution page -
Bhaskar AryaPoster
Observations of the Lyman-$\alpha$ forest in distant quasar spectra with upcoming surveys are expected to provide significantly larger and higher-quality datasets. To interpret these datasets, it is imperative to develop efficient simulations. One such approach is based on the assumption that baryonic densities in the intergalactic medium (IGM) follow a lognormal distribution. We develop and...
Go to contribution page -
Dr Jingke Xu (Lawrence Livermore National Laboratory, USA)Poster
The Migdal effect can greatly enhance the sensitivity of liquid xenon experiments to low-mass dark matter, and thus a direct confirmation of this effect is of paramount importance. However, Migdal searches with any target have proven to be challenging. Drawing on experimental efforts at LLNL, I will discuss the feasibility of directly observing Migdal signals in liquid xenon and analyze the...
Go to contribution page -
Robert Hammann (Max-Planck-Institut für Kernphysik (MPIK))Non-directional direct dark matter detectionPoster
Xenon in gaseous and liquid form is a widely used target material for rare-event searches, including the direct detection of dark matter. Its scintillation properties in the ultraviolet (UV) spectrum are well-known and extensively used. However, the potential of infrared (IR) scintillation light remains largely unexplored. Characterising this IR component is important for evaluating possible...
Go to contribution page -
Maria StraightPoster
While direct and indirect detection experiments have yet to find dark matter interacting with standard model particles, cosmological probes provide a complementary approach for exploring phenomenological dark matter-baryon scattering models. These models have two parameters vulnerable to prior volume effects, namely the scattering cross section and the fraction of dark matter that interacts...
Go to contribution page -
Ms Wenzer Qin (MIT)Poster
The temperature and polarization anisotropies of the cosmic microwave background (CMB) have been used to set constraints on decaying dark matter models down to keV masses. In this talk, I will discuss recent work to extend these limits down into the sub-keV mass range. I will show how we used principal component analysis to estimate the lower bound on the decay lifetime for a basis of...
Go to contribution page -
Kassidy Kollmann (Princeton University)Poster
The underlying nature of dark matter significantly impacts the formation and evolution of halos, as well as the properties of the subhalo population they host. The inner region of a subhalo's density distribution is particularly sensitive to dark matter microphysics, with alternative dark matter models leading to both cored and steeply-rising inner density profiles. This work investigates how...
Go to contribution page -
Divya SinghPoster
The nature of dark matter continues to elude us after decades of pointed efforts to detect various dark matter candidates. We know of its existence because dark matter gravitates, making gravitational waves (GW) a unique avenue for its detection. Compact object binaries forming in dark matter rich environments are detectable by the current generation of Earth-based GW detectors, giving us a...
Go to contribution page -
Abd El Aziz Hussein (Massachusetts Institute of Technology)Poster
Understanding the dark matter (DM) distribution within the inner few kpc of the Milky Way (MW) is essential to probe the particle nature of DM, and set the correct predictions for DM detection experiments. However, it is difficult to directly measure the density profile of DM in the inner galaxy, thus we rely on predictions from cosmological simulations.We characterize and compare the DM...
Go to contribution page -
Maximilian Ruhdorfer (Stanford)Poster
We place bounds on models of heavy, compact dark matter, such as MACHOs or primordial black holes from dynamical heating in the recently observed Ursa Major III/UNIONS 1 ultrafaint dwarf galaxy (UFD). In UFDs dark matter is generically much hotter than stars and heats up the stellar gas through gravitational interactions, causing the stellar cloud to expand. The observation of the galaxies...
Go to contribution page -
Gabriel Vasquez (The Ohio State University)Poster
Hawking radiation sets stringent constraints on Primordial Black Holes (PBHs) as a dark matter candidate in the $M \sim 10^{16} \ \mathrm{g}$ regime based on the evaporation products such as photons, electrons, and positrons motivating the need for rigorous modeling of the Hawking emission spectrum. Using semi-classical arguments, Page [Phys. Rev. D 16, 2402 (1977)] showed that the emission of...
Go to contribution page -
Roland AllenPoster
Using MadGraph, MadAnalysis, and Delphes, we have calculated the cross-sections and experimental signatures for detection of a well-defined dark matter WIMP [1-3] at proton, electron-positron, and muon colliders. At the 14 TeV high-luminosity LHC the cross-section for creation of a pair of these WIMPs is about 20 fb, and the background in missing transverse energy, invariant mass, and...
Go to contribution page -
Claire LaffanPoster
Haloscopes are experiments searching for QCD axions, one of the most compelling dark matter candidates due to their ability to solve the strong CP problem. Haloscopes consist of a tunable cavity resonator in a strong B-field. The B-field couples with the axion field, producing a signal photon that is resonantly enhanced by the cavity. Post-inflationary QCD axion searches are challenged by the...
Go to contribution page -
Prof. Eugene Oks (Auburn University, USA)Poster
From the most detailed map of the cosmic microwave background at the end of the recombination epoch, the Plank Collaboration deduced the existence of the baryonic dark matter (DM) in the ratio 1:5 to the non-baryonic DM. So, the baryonic DM does exist. The explanation of a puzzling observation by Bowman et al (2018) of the redshifted 21 cm spectral line from the early Universe, where it was...
Go to contribution page -
CLAIRE WILLIAMS (University of California - Los Angeles)Poster
The James Webb Space Telescope (JWST) has unlocked the ability to observe the UV radiation of galaxies hundreds or thousands of times less massive and fainter than the Milky Way at “cosmic dawn," the earliest period of galaxy formation in our Universe. In the Lambda-CDM paradigm, galaxy growth occurs hierarchically through the conglomeration of these tiny structures, which hold a tenuous...
Go to contribution page -
Isaac WangPoster
The parity solution to the strong CP problem, which predicts a $SU(3)_C \times SU(2)_L \times SU(2)_R \times U(1)_X$ gauge group, has been proposed and known for years. This group is spontaneously broken down to the SM gauge group at a parity-breaking scale $v_R$. Though collider searches for heavy gauge bosons have put a lower limit on $v_R$, the upper limit of $v_R$ has not been set and can...
Go to contribution page -
Prof. Ning Zhou (Shanghai Jiao Tong University (CN))Talk
Located at the China Jinping Underground Laboratory, the PandaX experiment employs xenon as a target to detect rare physics signals, such as dark matter and neutrinos. The PandaX-4T, the latest generation detector featuring a 4-ton xenon target volume, commenced data collection in 2020. One of our objectives is to unravel the nature of dark matter by investigating various potential signatures....
Go to contribution page -
Vanessa Zema (Max Planck Institute for Physics)Poster
The cryogenic scintillating calorimeters (CSCs) instrumented with transition edge sensors are detectors sensitive to tiny energy depositions down to O(eV), so far optimized to search for nuclear recoils induced by dark matter or neutrinos.
Go to contribution page
The OvDES project is dedicated to the phenomenology of electronic excitations induced by dark matter or neutrino in CSCs, with a focus on NaI target... -
Zhijie (Jay) Xu (Pacific Northwest National Lab)Poster
We studied the formation and evolution of the nonlinear dark matter halo structures in different eras and identified a critical particle mass of $10^{12}$GeV. Particles of this mass can have a free streaming mass comparable to the particle mass. Via direct collisions, these particles can form the smallest halo structure as early as $10^{-6}$s with a critical density ratio of $32\pi^2$ in the...
Go to contribution page -
Spencer Haskins (On behalf of the DEAP collaboration)Non-directional direct dark matter detectionTalk
The current status of the search for dark matter from the DEAP-3600 experiment will be presented, along with a detailed description of the analysis techniques. DEAP-3600 is a direct detection experiment that uses 3.3 tonnes of liquid argon as its target material. Located over 2 km underground at SNOLAB in Sudbury, Canada, the detector is designed to observe scintillation light from nuclear...
Go to contribution page -
Tao Xu (The University of Oklahoma)Poster
The observation of gravitational waves opens a new window for exploring the properties of dark matter. Gravitational wave messengers enable the concurrent measurement of their amplitudes and phases, facilitating a precise analysis of the production and propagation processes. In this talk, I will demonstrate how gravitational waves can be utilized to study the dark matter halo. Specifically, I...
Go to contribution page -
Mr Thomas Wong (UC San Diego)Poster
Tidal disruption events (TDEs) result from stars being gravitationally-scattered into low angular momentum orbits around massive black holes. We show that the short lifetimes of massive Population III stars at high redshifts could significantly suppress the volumetric TDE rate because they are too short-lived to reach disruption-fated orbits. However, this suppression can be alleviated if...
Go to contribution page -
Pierce GiffinPoster
If the dark sector possesses long-range self-interactions, these interactions can source dramatic collective instabilities even in astrophysical settings where the collisional mean free path is long. Here, we focus on the specific case of dark matter halos composed of a dark $U(1)$ gauge sector undergoing a dissociative cluster merger. We study this by performing the first dedicated...
Go to contribution page -
Cosmin Ilie (Colgate University)Poster
Launched at the end of 2021, the James Webb Space Telescope (JWST) has already begun to revolutionize our view of the cosmic dawn era. Specifically, it discovered an unexpectedly large number of extremely bright objects in the sky from the early Universe, whose light was emitted more than thirteen billion years ago. If these objects are interpreted as some of the first galaxies ever...
Go to contribution page -
Alessio Caminata (INFN e Universita Genova (IT))Talk
The DarkSide program at Laboratori Nazionali del Gran Sasso (LNGS) aims to detect dark matter WIMP particles using a dual-phase Liquid Argon (LAr) Time Projection Chamber (TPC). Since 2015, the DarkSide-50 detector, featuring a 50-kg active mass dual-phase LAr TPC filled with low-radioactivity argon sourced from underground, has produced world-class results for both low-mass and high-mass...
Go to contribution page -
Junyang LuPoster
Stellar streams are a promising way to probe the gravitational effects of low-mass dark matter (DM) subhalos. In recent years, there has been a remarkable explosion in the number of stellar streams detected in the Milky Way, and hundreds more may be discovered with future surveys such as LSST. Studies of DM subhalo impacts have so far focused only on a few of the thinnest and brightest...
Go to contribution page -
Nate Otto (Princeton University)Poster
The DMRadio collaboration aims to detect axions, a leading dark matter candidate. To enhance the sensitivity of such searches, the experiment relies on high quality factor (Q) resonators, which enable the detection of axion-induced electromagnetic signals. The DMRadio collaboration has demonstrated quality factors > 10$^6$ in fixed-frequency superconducting lumped-element resonators operating...
Go to contribution page -
Luca Pattavina (UNIMIB)Poster
The quest to understand dark matter (DM) continues to be a driving force in astrophysics and particle physics. This talk discusses the potential of the RES-NOVA project, envisioned for detecting astrophysical neutrinos via Coherent Elastic Neutrino-Nucleus Scattering (CEvNS), to also serve as a DM observatory. Leveraging the array of cryogenic detectors made from archaeological Pb, known for...
Go to contribution page -
Erwin Tanin (Stanford University)Poster
A cosmic or local abundance of millicharged particles may be produced by the early universe, stellar environments, dark matter, or dark energy. If such particles are light, these production channels result in a background of millicharged radiation. We show that light-shining-through-wall experiments employing superconducting RF cavities can also be used as “direct deflection” experiments to...
Go to contribution page -
Jessica Fry (Massachusetts Institute of Technology)Poster
The QCD axion is one of the most well-motivated dark matter candidates as its discovery would also solve the long-standing strong-CP problem. DMRadio-50L aims to detect low-mass axion dark matter through its interaction with photons. Targeting axions in the 5 kHz to 5 MHz range, DMRadio-50L will employ a lumped-element LC resonator to enhance the axion signal. Presently undergoing...
Go to contribution page -
Victoria Ankel (Stanford University)Poster
DMRadio-m$^{3}$ is a search for QCD axions down to DFSZ sensitivity between 30 and 200 MHz (120 – 800 neV). The experiment uses a >4 T solenoidal magnet and a coaxial pickup to probe axions through their coupling to a magnetic field. The coaxial pickup is tuned to a given resonance frequency using either capacitive or inductive components. The signal is read out with dc SQUIDs that are housed...
Go to contribution page -
Christopher Cain (Arizona State University)Poster
The thermal history and structure of the intergalactic medium (IGM) at $z \geq 4$ is an important boundary condition for reionization, and a key input for studies using the Ly$\alpha$ forest to constrain the masses of alternative dark matter candidates. Most such inferences rely on simulations that lack the spatial resolution to fully resolve the hydrodynamic response of IGM filaments and...
Go to contribution page -
Yu Zhao (University of Southern California)Poster
In Fuzzy Dark Matter, the quantum nature of the axion dark matter field induces granular density variations within halos, commonly referred to as "granules". These granules exert stochastic perturbations on the orbits of subhalos, leading to their redistribution over time. Previous work has modeled these effects using a diffusion-based approach. In this study, we propose an alternative...
Go to contribution page -
Yawen XiaoPoster
Detecting axion and dark photon dark matter in the milli-eV mass range has been considered 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 axion and...
Go to contribution page -
Chami AmarasingheTalk
In this talk I will describe analyses of two of the most notable backgrounds in the recent LUX-ZEPLIN (LZ) dark matter search: $^{124}$Xe double L-shell capture decays and $^{214}$Pb daughters of $^{222}$Rn. First, we observe that $^{124}$Xe double L-shell capture decays have charge yields deviating 30% from standard electronic recoil (ER) backgrounds, resulting in increased overlap with...
Go to contribution page -
Samuel Wong
While much supersymmetric WIMP parameter space has been ruled out, one remaining important candidate is Higgsino dark matter. The Higgsino can naturally realize the "inelastic dark matter" scenario, where the scattering off a nucleus occurs between two nearly-degenerate states, making it invisible to WIMP direct detection experiments if the splitting is too large to be excited. It was realized...
Go to contribution page -
Saiyang Zhang (University of Texas, Austin)Poster
My presentation will discuss the role of Primordial Black Holes (PBHs) as a component of dark matter throughout cosmic history. I will specifically focus on PBH candidates in the solar mass range of approximately 10-100 $M_{\odot}$ and massive PBHs of $10^6 M_{\odot}$ as possible seeds for first galaxies and supermassive black holes (SMBHs).
Go to contribution page
Our research utilizes N-body simulations with the... -
Mr Dylan Folsom (Princeton University)Poster
Experiments that aim to directly detect dark matter have placed increasingly constraining bounds on the cross section for interaction between dark matter and standard model particles. This requires an understanding of the phase-space distribution function (DF) of dark matter in the detector volume, which is a longstanding source of astrophysical uncertainty. We study the dark matter DF in 98...
Go to contribution page -
Taj Dyson (Stanford University)Poster
Post-inflationary axions are predicted to have $m_a \gtrsim 16.5~\mu$eV (4 GHz), a regime where unfavorable volume scaling drastically reduces the sensitivity of conventional cavity-based haloscopes. In this talk, I present on the design and characterization of high-volume (10’s of $\lambda^3$), high-frequency cavity geometries for the volume-enhanced resonating axion (VERA) program, an R&D...
Go to contribution page -
Moritz Fischer (University Observatory Munich)Poster
Although various experiments have investigated potential non-gravitational interactions between dark matter and baryons, clear evidence for such interactions is still missing. Stringent constraints on several models have been established through observations of the cosmic microwave background and direct detection experiments. Nevertheless, dark matter-baryon interactions may still play a...
Go to contribution page -
Priyank ParashariPoster
Primordial black holes (PBHs) are one of the most well-motivated DM candidates and it is important to devise new search strategies for them. Low-mass PBHs (masses between $\sim 10^{15}$ g to $10^{18}$ g) can be detected via their Hawking radiation. Evaporating PBHs inject energy into the intergalactic medium (IGM), which can significantly alter the thermal and ionization history of the...
Go to contribution page -
Erwin Tanin (Stanford University)Poster
Dark matter may exist today in the form of ultraheavy composite bound states. Collisions between such dark matter states can release intense bursts of radiation that includes gamma-rays among the final products. Thus, indirect-detection signals of dark matter may include unconventional gamma-ray bursts. Such bursts may have been missed not necessarily because of their low arriving gamma-ray...
Go to contribution page -
Vincent LeePoster
We summarize recent developments in using gravitational wave (GW) detectors, specifically laser and atom interferometers, as probes of dark matter (DM). We first introduce the proper time observable—the proper time elapsed as measured by the beamsplitter between events—as an explicitly gauge-invariant construct of the real observable in an interferometer experiment. We explicitly demonstrate...
Go to contribution page -
Zihao Xu (Columbia University in the City of New York)Talk
The primary goal of the XENONnT experiment is to search for weakly interacting massive particles (WIMPs), a leading theoretical candidate for dark matter. In its second science run, XENONnT accumulated a total live time of ~186 days. During this run, the radon removal system was operated in high-flow mode, achieving a significant reduction of about 50% in the concentration of Rn-222 compared...
Go to contribution page -
Chang Lee (Lawrence Livermore National Lab)Poster
Pu-241 is a newly proposed nuclide for studying the nature of neutrinos to complement tritium-based experiments. Pu-241 decays via first-forbidden non-unique beta minus decays with 20.8 keV Q-value, making it suitable for keV sterile neutrino search as well as active neutrinos mass measurement. MAGNETO-v experiment uses magnetic microcalorimeters in conjunction with SQUID magnetometers to...
Go to contribution page -
Julian Cuevas-Zepeda (University of Chicago)Poster
We report a measurement of the ionization efficiency of silicon nuclei recoiling with sub-keV kinetic energy in the bulk silicon of a skipper charge-coupled device (CCD). This energy range is relevant for the detection of low-mass dark matter particles. Nuclear recoils are produced by low-energy neutrons (<24 keV) from a $^{124}$Sb-$^{9}$Be photoneutron source, and their ionization signal is...
Go to contribution page -
Dr Noah Bray-Ali (Science Synergy)Poster
A simple yet compelling picture for the nature of the axion is presented. The picture implies that axions form the dark matter in the universe with cosmological number density six times the photons in the cosmic microwave background, mass about one million times less than the electron, and decay constant roughly one hundred million times more than the pion. Direct resonant production of axions...
Go to contribution page -
Dr Gonzalo Herrera (Virginia Tech)Poster
Dark matter may scatter off cosmic rays, high-energy neutrinos and gamma-rays in the vicinity of supermassive black holes. I will show that untested parameter space of dark matter-standard model interactions can induce significant effects on multi-messenger emissions from Active Galactic Nuclei, Blazars and Tidal Disruption Events. Conversely, I will discuss how the dark matter and the cosmic...
Go to contribution page -
Benjamin Lehmann (Massachusetts Institute of Technology)Poster
Compact objects as dark matter have historically been constrained by their dynamical effects. Since these objects can participate in hard few-body scattering processes, they can readily transfer energy to visible objects, with effects such as the disruption of wide binaries. However, binary disruption is not the only possible outcome of such few-body encounters. I will discuss recent work on...
Go to contribution page -
Barkotel Zemenu (Stanford University)Poster
DMRadio-50L is a resonant low-mass axion search utilizing a low-noise amplifier. The experiment’s sensitivity depends on tuning the resonator-amplifier coupling to approach a quantum-limited amplifier noise. This frequency-dependent coupling must be optimized in real-time across the experiment’s frequency range. In this poster, I will introduce a tunable transformer developed for this purpose...
Go to contribution page -
Dimple Sarnaaik (University of Southern California)Poster
The nature of dark matter (DM), which constitutes about 80% of the Universe's matter, remains one of the most profound mysteries in physics. While the cold dark matter (CDM) paradigm successfully explains large-scale structure formation, small-scale tensions motivate the exploration of alternative DM models. These include warm DM, ultralight DM, and interacting DM candidates.
Go to contribution page
One promising... -
Ioana Alexandra Zelko (Canadian Institute for Theoretical Astrophysics)Poster
I will illustrate the groundbreaking potential of strong gravitational lensing as a tool to probe the substructures within dark matter halos, which are integral to comprehensive cosmic formation models. I simulated and evaluated the capabilities of imminent adaptive optics systems coupled with advanced detectors on ground-based telescopes, such as the Keck Telescope systems, the Thirty Meter...
Go to contribution page -
Javier Acevedo (SLAC)Poster
White dwarfs are exceptional astrophysical laboratories for probing dark matter (DM). Their high density and large size enable efficient DM capture, potentially leading to observable signals. This talk explores the white dwarf population in the Milky Way’s nuclear star cluster as a novel probe of DM interactions. I will first discuss how these white dwarfs can significantly amplify DM...
Go to contribution page -
Tongyan LinPoster
I will discuss recent developments towards direct detection of dark matter with phonons. At sufficiently low nuclear recoil energy, the scattering of dark matter (DM) in crystals gives rise to single phonon and multiphonon excitations. I will discuss how in anisotropic crystals, the scattering rate into phonons modulates over each sidereal day as the crystal rotates with respect to the DM...
Go to contribution page -
Yufan QiePoster
The LUX-ZEPLIN (LZ) experiment, located at Sanford Underground Research Facility, is optimized to search for weakly interacting massive particles (WIMPs), one of the leading candidates for dark matter. WIMPs interactions in the detector produce nuclear-recoil (NR) events which are discriminated from electron-recoil (ER) background events using the ratio of collected charge to scintillation...
Go to contribution page -
Ryan Linehan (Fermi National Accelerator Laboratory)Poster
The continued absence of a conclusive direct detection of conventional, GeV-scale particle dark matter has recently increased focus on developing low-threshold detector technologies capable of sensing a variety of light (sub-GeV) and ultralight dark matter candidates. Many such detectors rely on athermal phonon sensing, in which meV-scale phonons from a DM scatter are sensed via their ability...
Go to contribution page -
121. R&D for XLZD, the Next-Generation Liquid Xenon Observatory for Dark Matter and Neutrino PhysicsYanina Biondi (Karlruhe Institute for Technology)Poster
Liquid xenon time projection chambers (LXe TPCs) represent the forefront of sensitivity in WIMP dark matter direct detection. The goal of the next-generation experiment XLZD (XENON-LZ-DARWIN) is to explore the WIMP parameter space down to the neutrino fog, where coherent neutrino-nucleus scattering dominates. Achieving this demands a combination of ultra-low background levels and a tenfold...
Go to contribution page -
Xiran Bai (Yale University)Poster
The Haloscope At Yale Sensitive To Axion Cold Dark Matter (HAYSTAC) Experiment is actively searching for QCD axions using a resonant microwave cavity enhanced by a squeezed state receiver, which allows us to circumvent the standard quantum limit in the measurement noise. We have recently completed Phase II operations, which provided new results in the range of 16.96-19.46 $\mu$eV with...
Go to contribution page -
Alex Droster (University of California, Berkeley)Poster
DMRadio-GUT (grand unified theory) is a planned experiment that will search for GUT-scale axion dark matter in the 0.4-120 neV mass range (0.1-30 MHz). This region of axion parameter space is particularly compelling because it probes the pre-inflationary axion, thereby offering a unique view into the early universe prior to the moments of inflation. Axions at these masses also emerge naturally...
Go to contribution page -
Chin Yi TanPoster
Ultra-faint dwarf galaxies are among the oldest, faintest, and most dark-matter-dominated stellar systems known, which makes them excellent laboratories for probing the nature of dark matter. Over the past decade, the number of identified ultra-faint dwarf galaxies has nearly quadrupled due to advancements in large optical and near-infrared sky surveys. The Dark Energy Camera (DECam) on the 4m...
Go to contribution page -
Paolo SalomonePoster
The DarkSide-20k experiment, under construction at LNGS, employs innovative Photo Detection Units (PDUs) based on cryogenic Silicon Photomultipliers (SiPMs) for its light detection system. Each PDU integrates 16 tiles containing 24 FBK NUV-HD Cryo SiPMs, creating a 20x20 cm² photosensor with 100 cm² active surface per channel. The production process, conducted in the new Nuova Officina Assergi...
Go to contribution page -
Pankaj Munbodh (University of California Santa Cruz)Poster
Due to shrinking of the parameter space for WIMP-scale dark matter, in recent years attention has shifted to probes of sub-GeV dark matter. In this work, we explore the direct detection prospects through single/multiphonon production for dark matter in the keV-GeV mass range, which couples effectively to protons/neutrons via spin-dependent interactions. In particular, we consider coupling the...
Go to contribution page -
Daniel Kodroff (Lawrence Berkeley National Lab)Talk
LUX-ZEPLIN (LZ) is a direct detection dark matter experiment located nearly a mile underground at the Sanford Underground Research Facility in South Dakota, USA employing a 7 tonne active volume of liquid xenon in a dual-phase time projection chamber (TPC). It is further surrounded by a three-component veto system: an instrumented 2-tonne liquid xenon skin, a near-hermetic gadolinium-loaded...
Go to contribution page -
Zhijie (Jay) Xu (Pacific Northwest National Lab)Poster
In this talk, “Bottom-up” and “top-down” approaches are presented for the formation and evolution of the nonlinear dark matter structures in different eras. Results strongly suggest a superheavy dark matter scenario with a critical particle mass of $10^{12}$GeV. Superheavy right-handed neutrinos of this mass can be a very promising candidate. The sterile neutrinos of mass $10^{12}$GeV can...
Go to contribution page -
Sohan Ghodla (Colgate University)Poster
The global network of Pulsar Timing Arrays (PTAs) recently announced the detection of a stochastic gravitational wave background (SGWB) in the nano-Hz frequency regime with 3σ significance. The conservative interpretation is that this SGWB originated from the population of inspiraling super-massive black hole (SMBH) binaries distributed across the universe. The conventional approach assumes...
Go to contribution page -
Prof. John McKeanPoster
Gravitational lensing provides a powerful probe of the global mass properties of galaxies, which are most sensitive from observations at extremely high angular resolution. Here, we present the analysis of the mass properties of 10 massive elliptical galaxies at intermediate redshifts, by combining gravitational lensing and the sensitivity and resolving power of the Atacama Large Millimetre...
Go to contribution page -
Dr M. Sten Delos (Carnegie Observatories)Poster
The first structures of particle dark matter form by gravitationally condensing out of the smooth mass distribution of the early universe. This formation mechanism leaves these prompt cusps with uniquely compact r-1.5 density profiles and links their properties tightly with the primordial mass and velocity distributions. Although they are the oldest elements of cosmic structure,...
Go to contribution page -
Jonah Rose Rose (Princeton)Poster
In this talk, I will introduce the DREAMS project, an innovative approach to understanding the astrophysical implications of alternative dark matter models and their effects on galaxy formation and evolution. The DREAMS project will ultimately comprise thousands of cosmological hydrodynamic simulations that simultaneously vary over dark matter physics, astrophysics, and cosmology in modeling a...
Go to contribution page -
Jeff Dror (University of Florida)Poster
What if dark matter only interacts with the visible sector through gravity? Long considered a grim scenario where its properties (e.g., spin and mass) might remain elusive, it has recently been recognized that bosonic dark matter exhibits oscillating components in its stress-energy tensor. Remarkably, these can induce sizable, time-dependent perturbations to the spacetime metric, reminiscent...
Go to contribution page -
Sandip RoyPoster
Dark sector theories naturally lead to multi-component scenarios for dark matter where a sub-component can dissipate energy through self-interactions, allowing efficient dark cooling within galaxies. In this talk, I'll present the first cosmological hydrodynamical simulations of dwarf galaxies and Milky Way-mass galaxies where the majority of the dark matter is collisionless Cold Dark Matter...
Go to contribution page -
David HitlinPoster
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...
Go to contribution page -
Derek Cranshaw (Queen's University)Talk
To continue to make progress in the global effort to understand the nature of dark matter, it is essential to further explore the spin-dependent WIMP-nucleon interaction parameter space. The PICO-40L bubble chamber is a dark matter direct detection experiment located at the SNOLAB underground research facility outside Sudbury, Canada. The abundance of non-zero-spin fluorine nucleons in the...
Go to contribution page -
Ryan Keeley (UC Merced)Poster
In this talk, I will present recent constraints on the DM free-streaming length from JWST observations of quadruply lensed quasars. Characterizing the population of low-mass dark matter halos, both in terms of their abundances and concentrations allows us to connect to the underlying particle physics of dark matter. The magnifications of strongly lensed quasars provide a probe of the abundance...
Go to contribution page -
Chris KelsoPoster
Using ancient minerals as paleo-detectors is a proposed experimental technique with the potential to transform supernova neutrino and dark matter detection. In this technique, minerals are processed and closely analyzed for nanometer scale damage track remnants from nuclear recoils caused by supernova neutrinos and possibly dark matter. These damage tracks present the opportunity to directly...
Go to contribution page -
Harsh Aggarwal (Indian Institute of Technology, Kharagpur), Nirmal Raj (TRIUMF)Poster
For scattering cross sections large enough to make the detector in direct searches optically thick to
Go to contribution page
the incident dark matter, dedicated multi-scatter signatures are being sought. We provide some sig-
nificant updates to the multi-scatter program. First, we refine earlier treatments of the dark matter
flux through detectors, generalizing to arbitrary geometries and velocity distributions.... -
Emily Koivu (Fermi National Accelerator Laboratory, Ohio State University)Poster
Primordial black holes (PBHs) in the asteroid-mass regime ($M \sim 10^{16}-10^{21}$ grams, $T_{\rm Hawking} \sim 1 $ MeV$ - 10$ eV) continue to persevere as a candidate for all the dark matter content of the universe. If PBHs have existed for an extended period of cosmic history, their Hawking radiation could have sizeable imprints in the cosmic history of the intergalactic medium (IGM),...
Go to contribution page -
Sayed Shafaat Mahmud (Colgate University)Poster
Dark Stars, hypothesized to have formed during the cosmic dawn era, are unique stellar objects powered by dark matter annihilation, which provides the energy necessary to counteract gravitational collapse. These stars can achieve immense sizes and luminosities, rivaling entire galaxies. Consequently, they may serve as precursors to the many observed supermassive black holes at high redshift,...
Go to contribution page
Choose timezone
Your profile timezone: