3-8 July 2016
The University of Melbourne
Australia/Melbourne timezone

Dark matter annihilation into right-handed neutrinos and the galactic center gamma-ray excess

4 Jul 2016, 17:30
20m
Carillo Gantner Theatre ()

Carillo Gantner Theatre

Carrillo Gantner Theatre, Sidney Myer Asia Centre The University of Melbourne VIC 3010 Australia
Talk Dark Matter and Particle Astrophysics Dark Matter and Particle Astrophysics

Speaker

Yi-Lei Tang (Peking University)

Description

We have studied a specific case that the dark matter particles annihilate into right-handed neutrinos. We calculate the predicted gamma-ray excess from the galactic center and compare our results with the data from the Fermi-LAT. An approximately 10-60 GeV right-handed neutrino with heavier dark matter particle can perfectly explain the observed spectrum. The annihilation cross section ⟨σv⟩ falls within the range 0.5-4×10−26 cm3/s, which is roughly compatible with the WIMP annihilation cross section. This presentation is based on our work 1512.02899.

Primary author

Yi-Lei Tang (Peking University)

Co-author

Prof. Shouhua Zhu (Peking University)

Presentation Materials