24–27 Mar 2025
UCLA Physics and Astronomy Building 1-425
US/Pacific timezone

Session

SESSION 19: Direct detection: Ultra-Light DM (Axions, ALPs, WISPs) searches (CHAIR: Kim Boddy -UTAUS)

27 Mar 2025, 15:20
UCLA Physics and Astronomy Building 1-425

UCLA Physics and Astronomy Building 1-425

475 Portola Plaza, Los Angeles, CA 90095 darkmatter@physics.ucla.edu

Presentation materials

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  1. Michael Tobar
    27/03/2025, 15:20
    Axions, Alps, Wisps as dark matter
    Talk

    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...

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  2. Cristina Martellini
    27/03/2025, 15:35
    Talk

    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...

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  3. Tsuguo Aramaki
    27/03/2025, 15:50
    Talk

    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,...

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  4. Erik Lentz (Pacific Northwest National Laboratory)
    27/03/2025, 16:05
    Talk

    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...

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  5. Michael Jewell (Yale University)
    27/03/2025, 16:20
    Talk

    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...

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  6. Junhui Liao
    27/03/2025, 16:35
    Talk

    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...

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  7. Dr Kaliroe Pappas (Columbia University)
    27/03/2025, 16:50
    Talk

    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...

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  8. Prof. Jaime Ruz Armendariz (TU Dortmund)
    27/03/2025, 17:05
    Talk

    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
    2020 solar minimum, along with advanced solar atmospheric magnetic field models, we establish a new limit...

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  9. Lindley Winslow
    27/03/2025, 17:20
    Talk

    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...

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  10. Andrew Sonnenschein (Fermilab)
    27/03/2025, 17:35
    Talk

    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...

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