# Origin of the DAMPE 1.4 TeV peak

## TL;DR

This paper proposes a dark matter annihilation model near a black hole to explain the 1.4 TeV peak in cosmic ray electrons observed by DAMPE, suggesting a dark matter mass of 1.5-3 TeV.

## Contribution

It introduces a simple dark matter annihilation model involving enhanced $e^+e^-$ channels near a black hole to explain the DAMPE peak.

## Key findings

- The model accounts for the sharp 1.4 TeV peak in DAMPE data.
- Predicted dark matter mass range is 1.5-3 TeV.
- Dark matter annihilation near black holes can produce observable spectral features.

## 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.