Cosmic rays through the Higgs portal
Astrophysics
2009-06-23 v3 High Energy Physics - Phenomenology
Abstract
We consider electroweak singlet dark matter with a mass comparable to the Higgs mass. The singlet is assumed to couple to standard matter through a perturbative coupling to the Higgs particle. The annihilation of a singlet with a mass comparable to the Higgs mass is dominated by proximity to the W, Z and Higgs peaks in the annihilation cross section. We find that the continuous photon spectrum from annihilation of a perturbatively coupled singlet in the galactic halo can reach a level of several per mil of the EGRET diffuse gamma ray flux.
Cite
@article{arxiv.0803.1444,
title = {Cosmic rays through the Higgs portal},
author = {Rainer Dick and Robert B. Mann and Kai E. Wunderle},
journal= {arXiv preprint arXiv:0803.1444},
year = {2009}
}
Comments
21 pages, 13 figures