Neutrinos from the Sun can discover dark matter-electron scattering
arXiv:2308.12336 · doi:10.1103/3f66-nfd5
Abstract
We probe dark matter-electron scattering using high-energy neutrino observations from the Sun. Dark matter (DM) interacting with electrons can get captured inside the Sun. These captured DM may annihilate to produce different Standard Model (SM) particles. Neutrinos produced from these SM states can be observed in IceCube and DeepCore. Although there is no excess of neutrinos in the solar direction, we find that the current datasets of IceCube and DeepCore set the strongest constraint on the DM-electron scattering cross section in the DM mass range \,GeV to \,GeV. Therefore our work implies that future observations of the Sun by neutrino telescopes have the potential to discover the DM-electron interaction.
v2: 14 pages, 5 figures. Updated capture rate; bounds improve by a factor of ~ 7. New appendix on thermalisation. Matches the published version in PRD
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