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Galactic Center Gamma Ray Excess and Higgs Boson(s) (1506.00789v1)
Published 2 Jun 2015 in hep-ph
Abstract: There is evidence for an excess of gamma rays with $O({\rm GeV})$ energy coming from the Galactic Center in data from the Fermi Telescope. The spectrum of the excess is well fit by 30 GeV dark matter annihilating into a pair of $b$ quarks with a cross section expected from a thermal relic. For an explanation of this excess, we study a renormalizable model where dark matter couples to the SM via a pseudoscalar that mixes with the $CP$-odd Higgs boson of a Two HIggs Doublet Model. We report the constraints on this model from direct detection, Higgs decays, and rare $B$ meson decays.
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