Bulletin of the American Physical Society
APS April Meeting 2022
Volume 67, Number 6
Saturday–Tuesday, April 9–12, 2022; New York
Session Q02: Dark Matter SearchesInvited Live Streamed
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Sponsoring Units: DPF DNP Chair: Joshua Berger, Colorado State University Room: Broadway South |
Monday, April 11, 2022 10:45AM - 11:21AM |
Q02.00001: Dark matter searches at Jefferson Lab Invited Speaker: Stepan Stepanyan The overwhelming evidence for dark matter (DM) in cosmological observations, manifested by its gravitational interactions, has inspired a major experimental effort to uncover its particle nature. The LHC, as well as direct and indirect detection experiments, have significantly constrained one of the best-motivated weak-scale DM models (WIMPs as dark matter candidates). In contrast, scenarios involving a light hidden sector dark matter with masses in the MeV-GeV range has garnered a good deal of attention. Models with hidden U(1) gauge symmetry are particularly attractive as they can be tested experimentally. If these vector gauge bosons or dark/heavy photons exist, they mix with ordinary photons through kinetic mixing, which induces their weak coupling to electrons, e. Since they couple to electrons, heavy photons are radiated in electron scattering and can subsequently decay into e +e − or to a pair of light dark matter particles. Experiments at Jefferson Lab use these signatures to search for heavy photons or light dark matter particles in the MeV to GeV mass range. In this talk, I will summarize the experimental program and introduce facilities at Jefferson Lab for dark matter searches. |
Monday, April 11, 2022 11:21AM - 11:57AM |
Q02.00002: TBA Invited Speaker: Maxim Pospelov TBA |
Monday, April 11, 2022 11:57AM - 12:33PM |
Q02.00003: Dark Sector Particle Searches at Accelerator Facilities Invited Speaker: Jaehoon Yu The discovery of a new scalar boson in 2012 at the Large Hadron Collider, which behaves increasingly like the Standard Model Higgs particle, the discovery of the gravitational wave in 2015 and the discovery of the black hole in 2019 greatly advance our understanding of the nature of the universe. While they help getting one step closer to the origin of the universe, there still are over 95% of the universe to understand. Of these is the dark matter that make up about a quarter of the universe. Dark matter from cosmogenic origin has been searched both directly and indirectly. The direct searches, however, have hard bound I sensitivity at the low mass due to the intrinsic backgrounds, most importantly from the radioactive impurities in the detector active material. Recent theoretical work and future precision neutrino experimental facilities present an opportunity to expand dark sector particle searches in accelerators, thanks to the unprecedented proton beam power and precision detection capabilities. Many future nuclear rare isotope facilities either ready for operation or close to be completed also possess similar advantages in search of dark sector particles in different kinematic regime, providing synergistic opportunities. In this talk, I will present various search potential for dark sector particles in future neutrino experimental facilities. I will also present a case study at a rare nuclear isotope facility, in particular the Axion-Like Particle and discuss the sensitivity reaches of the search and the challenges that must be overcome at such facilities. |
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