Super-Kamiokande Strongly Constrains Leptophilic Dark Matter Capture in the Sun

2025/01/24 by Nguyen, Thong T. Q., Linden, Tim, Carenza, Pierluca +1 · 2 citations
#FOS: Physical sciences #High Energy Astrophysical Phenomena (astro-ph.HE) #High Energy Physics - Phenomenology (hep-ph) #Solar and Stellar Astrophysics (astro-ph.SR)

paper · doi:10.48550/arxiv.2501.14864

Abstract

The Sun can efficiently capture leptophilic dark matter that scatters with free electrons. If this dark matter subsequently annihilates into leptonic states, it can produce a detectable neutrino flux. Using 10 years of Super-Kamiokande observations, we set constraints on the dark-matter/electron scattering cross-section that exceed terrestrial direct detection searches by more than an order of magnitude for dark matter masses below 100 GeV, and reach cross-sections as low as ∼4×10^-41cm^-2.

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