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arXiv · 2012.07930

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
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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.

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James B. Dent, Bhaskar Dutta, Jayden L. Newstead, Alejandro Rodriguez, Ian M. Shoemaker, Zahra Tabrizi, Natalia Tapia Arellano. 2020-12-14. Gamma Ray Signals from Cosmic Ray Scattering on Axion-Like Particles. https://doi.org/10.1103/physrevd.104.055044

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