Bulletin of the American Physical Society
6th Joint Meeting of the APS Division of Nuclear Physics and the Physical Society of Japan
Sunday–Friday, November 26–December 1 2023; Hawaii, the Big Island
Session LW01: Future Prospects of Direct Detection of Dark Matter I & IIInvited Workshop
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Chair: Kevin Lesko, Lawrence Berkeley National Laboratory; Sei Yoshida, Osaka University Room: Hilton Waikoloa Village Kona 2-3 |
Friday, December 1, 2023 9:00AM - 9:30AM |
LW01.00001: Present status of WIMP dark matter; light, regular, and heavy candidates Invited Speaker: Shigeki Matsumoto The WIMP is known to be one of the most influential dark matter candidates and is being intensively searched for at collider experiments, underground laboratories, and cosmological/astrophysical observations. It looks cornered due to the negative results of the experiments/observations. However, several regions are uncharted, even if the WIMP mass is around the EW scale. Moreover, regions with a WIMP mass heavier and lighter enough than the EW scale are also largely uncharted, though those are well-motivated from the viewpoint of minimality and the dark sector scenario. We studied such regions systematically and comprehensively utilizing the effective field theory and simplified models for the WIMP and clarified which regions are indeed uncharted. We found that future large-scale direct dark matter detection experiments and those sensitive to the low-mass (sub-GeV) WIMP play a crucial role in investigating the regions. |
Friday, December 1, 2023 9:30AM - 10:00AM |
LW01.00002: Current Results and Outlook for the LUX-ZEPLIN (LZ) Experiment Invited Speaker: David Woodward LUX-ZEPLIN (LZ) is a low-background, multi-detector dark matter experiment centered on a time projection chamber (TPC) utilizing a 7 t liquid xenon target to observe dark matter interactions. It is being operated 4850 ft underground at the Sanford Underground Research Facility (SURF) in Lead, South Dakota. This talk will give an overview of the LZ project and report on its current status, including results of a search for Weakly Interacting Massive Particles (WIMPs) using data from the first science run of the experiment. I will also provide an outlook of the scientific goals for the remainder of the experiment. |
Friday, December 1, 2023 10:00AM - 10:30AM |
LW01.00003: Results and Prospect for XENONnT Experiment Invited Speaker: Atsushi Takeda The XENONnT experiment aims to search for dark matter in the form of Weakly Interacting Massive Particles (WIMPs) based on a two-phase time projection chamber with 5.9 tonnes of instrumented liquid xenon. A blind analysis for the first science run with an exposure larger than 1 tonne-year showed the data was consistent with the expectations from the background events and set new limits on interaction of WIMPs. Thanks to the five times lower background than those in the former XENON1T experiment, limits were greatly improved with a similar exposure. |
Friday, December 1, 2023 10:30AM - 11:00AM |
LW01.00004: The COSINE dark matter search experiment : Current status and future prospects. Invited Speaker: Hyunsu Lee COSINE-100 is a dark matter direct detection experiment aimed at verifying DAMA/LIBRA's claim of observing annual modulation signals using NaI(Tl) crystals. Between September 2016 and March 2023, the COSINE-100 experiment collected physics data at the Yangyang underground laboratory in Korea using 106 kg of NaI(Tl) crystals. The detector assembly design is currently being upgraded to increase light collection efficiency in preparation for new operation at the Yemilab, a new underground laboratory in Korea, which is planned to start from October 2023. Moreover, COSINE collaboration is developing a high-purity NaI(Tl) detector for the next phase COSINE-200 experiment. This presentation will provide an update on the current status and future prospects of both COSINE-100 and COSINE-200 experiments. |
Friday, December 1, 2023 11:00AM - 11:30AM |
LW01.00005: SuperCDMS background design and prospects for direct detection of low mass dark matter Invited Speaker: John L Orrell The Super Cryogenic Dark Matter Search (SuperCDMS) Collaboration is building a direct detection dark matter experiment at SNOLAB. This experiment will explore dark matter-nucleon interactions for particle masses as low as ~0.4 GeV/c^2, with an expected sensitivity reach of approximately 10^-43 cm^2 at 1 GeV/c^2 dark matter mass. The experimental design, solid-state cryogenic detectors, and detailed sensitivity reach of the experiment will be presented. Connections are drawn between the low-background design of SuperCDMS SNOLAB and other low-background experiments. Construction of SuperCDMS is underway at SNOLAB and recent detector R&D results from the SuperCDMS Collaboration are opening windows to search for dark photon and electron-recoil-based dark matter interactions. |
Friday, December 1, 2023 11:30AM - 12:00PM |
LW01.00006: Ultralight axion dark matter search with DANCE Invited Speaker: Yuta Michimura Axion and axion-like particles are leading candidates for ultralight dark matter, and there have been enormous efforts to search for their signatures through a variety of experiments and astrophysical observations. Axion may cause a polarization rotation of light through the parity-violating interaction with photons. Recently, we have proposed to search for axion dark matter by enhancing the polarization rotation effect using a bow-tie optical ring cavity [PRL 121, 161301 (2018)]. We have shown that this Dark matter Axion search with riNg Cavity Experiment (DANCE) can improve the sensitivity to axion-photon coupling for axion mass m_a<10^{-10} eV by up to several orders of magnitude, compared with the current best limits. Currently, a prototype experiment DANCE Act-1 is underway at Tokyo to demonstrate the feasibility of the method. In this talk, I will present the principle of DANCE and the status of DANCE Act-1, including our first results from May 2021 run [arXiv:2303.035947]. |
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