26-30 October 2015
Asia/Tokyo timezone

Galactic Center excess by two Higgs doublet portal scalar dark matter

29 Oct 2015, 18:13
Oral presentation Dark matter: Physics and Cosmology Dark Matter


Osamu Seto (Hokkai-Gakuen University)


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)


Prof. Nobuchika Okada (University of Alabama)

Presentation Materials