2015/04/27 by Pyungwon Ko, Wan-Il Park, Ko, P. +3
Physics and Astronomy · Computer Science · #Dark Matter and Cosmic Phenomena #Computational Physics and Python Applications #Atomic and Subatomic Physics Research
paper · pdf · doi:10.48550/arxiv.1504.06944
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.