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arXiv · 2006.16145

Pseudo-Dirac Dark Matter in XENON1T

Wei Chao·Yu Gao·Ming jie Jin
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Abstract

The XENON1T dark matter experiment recently reported 0.65 ton-year exposure measurement on electron recoils , which shows an excess in $2\sim 3$ KeV recoils above the detector background. In this paper we present a Pseudo-Dirac dark matter scenario to explain the excess via inelastic dark matter-electron scattering. With a KeV scale mass splitting between the two components of the Pseudo-Dirac dark matter, the slightly excited component can down-scatter on electrons. The desired dark matter masses are about 10 GeV with a 4 KeV mass-splitting and unity coupling to electrons, which generate the observed XENON1T recoil events, give the appropriate dark matter relic abundance and satisfy collider search limits.

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Wei Chao, Yu Gao, Ming jie Jin. 2020-06-29. Pseudo-Dirac Dark Matter in XENON1T. https://arxiv.org/abs/2006.16145

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