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

被引：0
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作者：
Yi-Lei Tang
Shou-hua Zhu
机构：
[1] Peking University,Center for High Energy Physics
[2] Peking University,Institute of Theoretical Physics & State Key Laboratory of Nuclear Physics and Technology
[3] Collaborative Innovation Center of Quantum Matter,undefined
来源：
Journal of High Energy Physics | / 2016卷
关键词：
Beyond Standard Model; Neutrino Physics;
D O I：
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学科分类号：
摘要：
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 〈σv〉 falls within the range 0.5–4 × 10−26 cm3/s, which is roughly compatible with the WIMP annihilation cross section.
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