Report of the Topical Group on Particle Dark Matter for Snowmass 2021

Jodi Cooley, Tongyan Lin, W. Hugh Lippincott, Tracy R. Slatyer, Tien-Tien Yu, Daniel S. Akerib, Tsuguo Aramaki, Daniel Baxter, Torsten Bringmann, Ray Bunker, Daniel Carney, Susana Cebrián, Thomas Y. Chen, Priscilla Cushman, C. E. Dahl, Rouven Essig, Alden Fan, Richard Gaitskell, Cristano Galbiati, Graciela B. Gelmini, Graham K. Giovanetti, Guillaume Giroux, Luca Grandi, J. Patrick Harding, Scott Haselschwardt, Lauren Hsu, Shunsaku Horiuchi, Yonatan Kahn, Doojin Kim, Geon-Bo Kim, Scott Kravitz, V. A. Kudryavtsev, Noah Kurinsky, Rafael F. Lang, Rebecca K. Leane, Benjamin V. Lehmann, Cecilia Levy, Shengchao Li, Ben Loer, Aaron Manalaysay, C. J Martoff, Gopolang Mohlabeng, M. E. Monzani, Alexander St J. Murphy, Russell Neilson, Harry N. Nelson, Ciaran A. J. O'Hare, K. J. Palladino, Aditya Parikh et al.

Submitted on 15 September 2022


This report summarizes the findings of the CF1 Topical Subgroup to Snowmass 2021, which was focused on particle dark matter. One of the most important scientific goals of the next decade is to reveal the nature of dark matter (DM). To accomplish this goal, we must delve deep, to cover high priority targets including weakly-interacting massive particles (WIMPs), and search wide, to explore as much motivated DM parameter space as possible. A diverse, continuous portfolio of experiments at large, medium, and small scales that includes both direct and indirect detection techniques maximizes the probability of discovering particle DM. Detailed calibrations and modeling of signal and background processes are required to make a convincing discovery. In the event that a candidate particle is found through different means, for example at a particle collider, the program described in this report is also essential to show that it is consistent with the actual cosmological DM. The US has a leading role in both direct and indirect detection dark matter experiments -- to maintain this leading role, it is imperative to continue funding major experiments and support a robust R\&D program.


Comment: Submitted 30 pages, 11 figures, many references, Report of the CF1 Topical Group for Snowmass 2021

Subjects: High Energy Physics - Phenomenology; Astrophysics - Cosmology and Nongalactic Astrophysics; Astrophysics - High Energy Astrophysical Phenomena; High Energy Physics - Experiment