Abelian dark matter models for 511 keV gamma rays and direct detection

Details Abelian dark matter models for 511 keV gamma rays and direct detection Abelian dark matter models for 511 keV gamma rays and direct detection

2012-04-09

arxiv.org/abs/1204.1965v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 3 figures, submitted to Annalen der Physik special issue on dark matter

Scientific paper

We construct a simple U(1) hidden sector model of metastable dark matter that could explain excess 511 keV gamma rays from the galactic center as observed by INTEGRAL, through inelastic scattering of dark matter followed by its decay. Although the model is highly constrained, it naturally accommodates dark matter with mass and cross section in the range suggested by the CoGeNT and CRESST experiments. The dark gauge boson that mediates the interactions with standard model matter has a mass of several hundred MeV, and might be discovered by heavy photon detection experiments, including APEX, MAMI and HPS.

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