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J.M. Cline and A.R. Frey Abelian dark matter models for 511 keV γ rays and direct detection Annalen der Physik 524

Version of Record online: 30 JUL 2012 | DOI: 10.1002/andp.201200082

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The authors 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.

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