Gamma Ray Signals from Cosmic Ray Scattering on Axion-Like Particles
High Energy Physics - Phenomenology
2021-10-04 v1
Abstract
Dark Matter (DM) may be comprised of axion-like particles (ALPs) with couplings to photons and the standard model fermions. In this paper we study photon signals arising from cosmic ray (CR) electron scattering on background ALPs. For a range of masses we find that these bounds can place competitive new constraints on the ALP-electron coupling, although in many models lifetime constraints may supersede these bounds. In addition to current Fermi constraints, we also consider future e-Astrogram bounds which will have greater sensitivity to ALP-CR induced gamma-rays.
Keywords
Cite
@article{arxiv.2012.07930,
title = {Gamma Ray Signals from Cosmic Ray Scattering on Axion-Like Particles},
author = {James B. Dent and Bhaskar Dutta and Jayden L. Newstead and Alejandro Rodriguez and Ian M. Shoemaker and Zahra Tabrizi and Natalia Tapia Arellano},
journal= {arXiv preprint arXiv:2012.07930},
year = {2021}
}
Comments
12 pages, 3 figures