2020/10/19 by James B. Dent, Bhaskar Dutta, Jayden L. Newstead +3 · 1 citation
Physics and Astronomy · #Astrophysics #COSMIC cancer database #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark matter #Electron #Nuclear physics #Physics #Quantum Electrodynamics and Casimir Effect #astro-ph.CO #hep-ex #hep-ph
paper · pdf · doi:10.1103/physrevd.103.095015
published as Phys. Rev. D 103, 095015 (2021) · 17 pages, 6 figures
arxiv created 2020/10/19 · openalex created_date 2020/10/29 · openalex publication_date 2021/05/18 · arxiv updated 2021/05/26 · openalex updated_date 2026/08/06
Nonrelativistic dark matter (DM) can be accelerated by scattering on high-energy cosmic-ray (CR) electrons. This process leads to a subpopulation of relativistic or semirelativistic DM which extends the experimental reach for direct detection in the sub-GeV mass regime. In this paper we examine the current and future potential of this mechanism for constraining models of light dark matter. In particular, we find that Super-Kamiokande and XENON1T data can already provide leading constraints on the flux of dark matter that has been accelerated to high energies from cosmic ray electrons. We also examine future projected sensitivities for DUNE and Hyper-K, and contrary to previous findings, conclude that DUNE will be able supersede Super-K bounds on cosmic-ray upscattered DM for a variety of DM models.