arXiv:2012.07930·v1·High Energy Physics — Phenomenology
Gamma Ray Signals from Cosmic Ray Scattering on Axion-Like Particles
James B. Dent🇺🇸 · Bhaskar Dutta🇺🇸 · Jayden L. Newstead🇦🇺 · Alejandro Rodriguez🇺🇸 · Ian M. Shoemaker🇺🇸 · Zahra Tabrizi🇺🇸 · Natalia Tapia Arellano🇺🇸
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.
Comments: 12 pages, 3 figures