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Dark matter annihilation into right-handed neutrinos and the galactic center gamma-ray excess
- Source :
- JHEP03(2016)043
- Publication Year :
- 2015
-
Abstract
- In this paper, we will discuss 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 $\langle \sigma v \rangle$ falls within the range $0.5$-$4 \times 10^{-26} \text{ cm}^3/\text{s}$, which is roughly compatible with the WIMP annihilation cross section.<br />Comment: 11 pages, 5 figures
- Subjects :
- High Energy Physics - Phenomenology
Subjects
Details
- Database :
- arXiv
- Journal :
- JHEP03(2016)043
- Publication Type :
- Report
- Accession number :
- edsarx.1512.02899
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1007/JHEP03(2016)043