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Hidden Higgs portal vector dark matter for the Galactic center gamma-ray excess from the two-step cascade annihilation, and muon g − 2
2018
Journal of High Energy Physics
We have built a lepton-specific next-to-minimal two-Higgs-doublet-portal vector dark matter model. The vector dark matter in the hidden sector does not directly couple to the visible sector, but instead annihilates into the hidden Higgs bosons which decay through a small coupling into the CP-odd Higgs bosons. In this model, the Galactic center gamma-ray excess is mainly due to the 2-step cascade annihilation with τ's in the final state. The obtained mass of the CP-odd Higgs A in the Galactic
doi:10.1007/jhep08(2018)099
fatcat:pixj7ev7cfgwzecdjdv63as3iq