Gamma rays from the annihilation of singlet scalar dark matter

Details Gamma rays from the annihilation of singlet scalar dark matter Gamma rays from the annihilation of singlet scalar dark matter

2008-10-23

arxiv.org/abs/0810.4267v4

JCAP 0903:003,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, 5 figures. v2: minor modifications to text and figures; main results unchanged. v3: some references added

Scientific paper

10.1088/1475-7516/2009/03/003

We consider an extension of the Standard Model by a singlet scalar that accounts for the dark matter of the Universe. Within this model we compute the expected gamma ray flux from the annihilation of dark matter particles in a consistent way. To do so, an updated analysis of the parameter space of the model is first presented. By enforcing the relic density constraint from the very beginning, the viable parameter space gets reduced to just two variables: the singlet mass and the higgs mass. Current direct detection constraints are then found to require a singlet mass larger than 50 GeV. Finally, we compute the gamma ray flux and annihilation cross section and show that a large fraction of the viable parameter space lies within the sensitivity of Fermi-GLAST.

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