Author:
Du Mingxuan,Liang Jinhan,Liu Zuowei,Tran Van Que,Xue Yilun
Abstract
Abstract
We present a dark matter model to explain the excess events in the electron recoil data recently reported by the Xenon1T experiment. In our model, dark matter
annihilates into a pair of on-shell particles
, which subsequently decay into the
final state;
interacts with electrons to generate the observed excess events. Because of the mass hierarchy, the velocity of
can be rather large and can have an extended distribution, providing a good fit to the electron recoil energy spectrum. We estimate the flux of
from dark matter annihilations in the galaxy and further determine the interaction cross section, which is sizable but sufficiently small to allow
to penetrate the rocks to reach the underground labs.
Funder
National Natural Science Foundation of China
Subject
Astronomy and Astrophysics,Instrumentation,Nuclear and High Energy Physics
Cited by
23 articles.
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