Cosmic rays through the Higgs portal

Details Cosmic rays through the Higgs portal Cosmic rays through the Higgs portal

2008-03-10

arxiv.org/abs/0803.1444v3

Nucl.Phys.B805:207-230,2008

Astronomy and Astrophysics

Astrophysics

21 pages, 13 figures

Scientific paper

10.1016/j.nuclphysb.2008.07.016

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.

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