Search for dark matter particle interactions with electron final states with DarkSide-50

2022/07/25 by The DarkSide-50 Collaboration, :, P. Agnes +141 · 1 voice · 1 citation
Physics and Astronomy · #hep-ex #astro-ph.CO

paper · pdf · doi:10.1103/physrevlett.130.101002

arxiv published 2022/07/25 · arxiv updated 2023/02/16

Abstract

We present a search for dark matter particles with sub-GeV/c² masses whose interactions have final state electrons using the DarkSide-50 experiment's (12306 ± 184) kg d low-radioactivity liquid argon exposure. By analyzing the ionization signals, we exclude new parameter space for the dark matter-electron cross section σ_e, the axioelectric coupling constant g_Ae, and the dark photon kinetic mixing parameter κ. We also set the first dark matter direct-detection constraints on the mixing angle |U_e4|² for keV sterile neutrinos.

Cited by

• Brazilian Report on Dark Matter 2024

Discussions

• Reaching lower dark matter masses means giving up the ability to distinguish nucleon/electron interactions, but means we have sensitivity to dark matter interacting with the electrons surrounding the [bsky, 0 points, 0 comments]

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