Speaker
Osamu Seto
(Hokkai-Gakuen University)
Description
We consider a simple extension of the Higgs sector in a Higgs portal dark matter where a real scalar is a candidate for dark matter in the present Universe. This Higgs sector extension allows that its dark matter annihilation suitably explains the observed excess of the gamma-ray flux from the Galactic Center. We identify the parameter region of the model that can fit the gamma-ray excess and satisfy phenomenological constraints, such as the observed dark matter relic density and the null results of direct dark matter search experiments.
Primary author
Osamu Seto
(Hokkai-Gakuen University)
Co-author
Prof.
Nobuchika Okada
(University of Alabama)
