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arXiv · 1904.12418

Origin of the DAMPE 1.4 TeV peak

Man Ho Chan·Chak Man Lee
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Abstract

Recent accurate measurements of cosmic ray electron flux by the Dark Matter Particle Explorer (DAMPE) reveal a sharp peak structure near 1.4 TeV, which is difficult to explain by standard astrophysical processes. In this letter, we propose a simple model that the enhanced dark matter annihilation via the $e^+e^-$ channel and with the thermal relic annihilation cross section around the current nearest black hole (A0620-00) can satisfactorily account for the sharp peak structure. The predicted dark matter mass is $\sim 1.5-3$ TeV.

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Man Ho Chan, Chak Man Lee. 2019-04-29. Origin of the DAMPE 1.4 TeV peak. https://doi.org/10.1093/mnrasl%2Fslz062

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