Gamma Ray Line Constraints on Effective Theories of Dark Matter

Details Gamma Ray Line Constraints on Effective Theories of Dark Matter Gamma Ray Line Constraints on Effective Theories of Dark Matter

2010-08-31

arxiv.org/abs/1009.0008v2

Nucl.Phys.B844:55-68,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

20 pages, 9 figures

Scientific paper

10.1016/j.nuclphysb.2010.10.022

A monochromatic gamma ray line results when dark matter particles in the galactic halo annihilate to produce a two body final state which includes a photon. Such a signal is very distinctive from astrophysical backgrounds, and thus represents an incisive probe of theories of dark matter. We compare the recent null results of searches for gamma ray lines in the galactic center and other regions of the sky with the predictions of effective theories describing the interactions of dark matter particles with the Standard Model. We find that the null results of these searches provide constraints on the nature of dark matter interactions with ordinary matter which are complementary to constraints from other observables, and stronger than collider constraints in some cases.

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