The Galactic Center Excess from Z3 Scalar Semi-Annihilations
classification
✦ hep-ph
keywords
darkexcessmattergalactichiggsregionscalarcenter
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We investigate the possibility of the Z3 scalar singlet model explaining the Fermi galactic centre excess. We find a good fit to the measured spectral excess in the region where the dark matter mass is comparable to the Higgs and the Higgs portal coupling $\lambda_{HS}\sim 0.04$. This preferred region is consistent with constraints from vacuum stability and current dark matter experiments, and will be discovered or falsified soon by future dark matter direct detection experiment.
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