Bulletin of the American Physical Society
APS April Meeting 2021
Volume 66, Number 5
Saturday–Tuesday, April 17–20, 2021; Virtual; Time Zone: Central Daylight Time, USA
Session T02: New Frontiers in Dark Matter ResearchInvited Live
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Sponsoring Units: DPF DAP Chair: Yanou Cui, University of California, Riverside |
Monday, April 19, 2021 3:45PM - 4:21PM Live |
T02.00001: Light Dark Matter: Perspectives and Prospects from Theory, Accelerators , Direct Detection, and Cosmology Invited Speaker: Natalia Toro In the quest to identify the dark matter (DM), the possibility that it is made of particles similar in mass to the electron or proton has garnered great attention in recent years. This framework allows standard thermal freeze-out of DM, which motivates a sharp and accessible milestone in interaction strength; at the same time, broader possibilities for the DM origin motivate a wealth of distinctive signals of DM in accelerators, direct detection, and cosmological probes. I will highlight new and exciting opportunities in each of these directions, and discuss several aspects of their complementarity. [Preview Abstract] |
Monday, April 19, 2021 4:21PM - 4:57PM Live |
T02.00002: The High Energy-Intensity Frontier at the Particle-Physics Renaissance Invited Speaker: Yu-Dai Tsai I will give a general overview of experimental facilities with high energies and high intensities, focusing on proton fixed-target (at Fermilab) and hadron collider experiments (at the LHC). I will classify the searches as "decay" searches and "scattering" searches, and detail the new physics models of interest. These models provide attractive dark matter candidates and are motivated by other experimental anomalies (including the anomalous muon g-2 measurement), and the experiments can help close the gap between the low-mass/high-mass regions for the dark sector searches, and the low-energy/high-energy gap for the neutrino study. I will present two new experimental proposals, LongQuest and FORMOSA. LongQuest is a multi-purpose proton fixed-target experiment, studying the decay particles, including dark photons and axion-like particles. FORMOSA is a specialized LHC forward experiment that is the world-most sensitive proposal to study millicharged particles, and also has the potential ability to study heavy neutrino and tau neutrino dipole moments. FORMOSA is directly inspired by similar experiments installed and proposed at LHC (milliQan) and at Fermilab (FerMINI). I will also mention the analyses based on existing experiments and proposals (MiniBooNE, MicroBooNE, SBND, DUNE, and SHiP), and searches of new physics based on cosmic-ray productions at Super (Hyper)-Kamiokande. Some of these ideas can be further applied to ILC and future muon colliders. Finally, I will discuss the possibility of constructing liquid Argon neutrino detectors at the LHC forward physics region to study high-energy neutrino cross-sections, named nu-FLArE. This talk is based on arXiv:2008.08608, arXiv:1908.07525, arXiv:2010.07941, arXiv:1812.03998, and ongoing works. [Preview Abstract] |
Monday, April 19, 2021 4:57PM - 5:33PM Live |
T02.00003: Dark matter and its interactions Invited Speaker: Hai-Bo Yu In this talk, I will first give an overview on dark matter distributions in galactic systems, including spiral galaxies in the field, Milky Way satellite galaxies, newly-discovered ultra diffuse galaxies, and galaxy clusters, and show that they are more diverse than predicted in standard cold dark matter. Then I will show that self-interacting dark matter may provide a unified explanation to the diverse dark matter distributions across the wide range of galactic mass scales. I will further discuss other intriguing astrophysical implications of self-interacting dark matter, such as the origin of supermassive black holes in the early Universe. [Preview Abstract] |
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