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arXiv · 2011.01940

Absorption of Sub-MeV Fermionic Dark Matter by Electron Targets

Jeff A. Dror·Gilly Elor·Robert McGehee·Tien-Tien Yu
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Abstract

We study a new class of signals where fermionic dark matter is absorbed by bound electron targets. Fermionic absorption signals in direct detection and neutrino experiments are sensitive to dark matter with sub-MeV mass, probing a region of parameter space in which dark matter is otherwise challenging to detect. We calculate the rate and energy deposition spectrum in xenon-based detectors, making projections for current and future experiments. We present two possible models that display fermionic absorption by electrons and study the detection prospects in light of other constraints.

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Jeff A. Dror, Gilly Elor, Robert McGehee, Tien-Tien Yu. 2020-11-03. Absorption of Sub-MeV Fermionic Dark Matter by Electron Targets. https://doi.org/10.1103/physrevd.103.035001

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