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 ∼1.5−3 TeV.
@article{arxiv.1904.12418,
title = {Origin of the DAMPE 1.4 TeV peak},
author = {Man Ho Chan and Chak Man Lee},
journal= {arXiv preprint arXiv:1904.12418},
year = {2020}
}