UCLA Dark Matter 2025

Session

SESSION 12: Direct Detection: status of Light DM detection (CHAIR: Tommaso Treu -UCLA)

26 Mar 2025, 13:30

UCLA Physics and Astronomy Building 1-425

65. The search for light dark matter with DAMIC-M

Danielle Norcini (Johns Hopkins University)

26/03/2025, 13:30

Talk

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...

150. Searching for dark sectors and X17 with PADME

Andre Frankenthal (Princeton University (US))

26/03/2025, 13:45

Talk

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....

20. The DarkSide-LowMass search for dark matter below 10 GeV/c^2

Shawn Scott Westerdale (University of California Riverside (US))

26/03/2025, 14:00

Talk

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...

56. Search for electronic recoil signals with XENONnT

Chiara Capelli (University of Zurich)

26/03/2025, 14:15

Talk

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...

143. The TESSERACT Project

Prof. Scott Hertel (U. Massachusetts, Amherst)

26/03/2025, 14:30

Talk

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...

148. Exploring New Physics with PandaX-4T Low Energy Electronic Recoil Data

Xinning Zeng

26/03/2025, 14:45

Talk

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...

91. Latest results and prospects of the SENSEI experiment.

Ana Martina Botti (Fermilab), SENSEI Collaboration

26/03/2025, 15:00

Talk

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...

15. A search for cosmic ray boosted light dark matter with the LUX-ZEPLIN experiment

Yongheng Xu

26/03/2025, 15:15

Talk

Cosmic rays in the Milky Way may collide with sub-GeV dark matter, imparting sufficient kinetic energies to produce detectable signals in liquid xenon
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...