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Higgs-Portal Dark Matter for GeV Gamma-Ray Excess

Published 27 Apr 2015 in hep-ph and astro-ph.HE | (1504.06944v1)

Abstract: We present Higgs-Portal dark matter (DM) models to explain the reported Galactic Center GeV gamma-ray excess. Naive effective theories are inconsistent with direct detection constraint for the relevant parameter range. Simple extended models with dark gauge symmetries can easily accommodate the gamma-ray excess through the Higgs-Portal coupling while satisfying various constraints.

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