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Constraints on the dark matter annihilations by neutrinos with substructure effects included
Yin, PF; Liu, J; Yuan Q(袁强); Bi XJ(毕效军); Yuan, Q; Bi, XJ; Zhu, SH
2008
发表期刊PHYSICAL REVIEW D
卷号78期号:6页码:65027
通讯作者[Yin, Peng-fei ; Liu, Jia ; Zhu, Shou-hua] Peking Univ, Inst Theoret Phys, Beijing 100871, Peoples R China ; [Yin, Peng-fei ; Liu, Jia ; Zhu, Shou-hua] Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China ; [Bi, Xiao-jun] Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China ; [Yuan, Qiang ; Bi, Xiao-jun] Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China
文章类型Article
摘要Dark matter (DM) annihilations in the Galaxy may produce high-energy neutrinos, which can be detected by the neutrino telescopes, for example, IceCube, ANTARES, and Super-Kamiokande. The neutrinos can also arise from hadronic interaction between cosmic rays and the atmosphere around the Earth, known as atmospheric neutrino. Current measurements on neutrino flux are consistent with theoretical prediction of atmospheric neutrino within the uncertainties. In this paper, by requiring that the DM annihilation neutrino flux is less than the current measurements, we obtain an upper bound on the cross section of dark matter annihilation . Compared with previous investigations, we improve the bound by including DM substructure contributions. In our paper, two kinds of substructure effects are scrutinized. One is the substructure average contribution over all directions. The other is the point source effect by a single massive subhalo. We found that the former can improve the bound by several times, while the latter can improve the bound by 10(1) similar to 10(4) utilizing the excellent angular resolution of the neutrino telescope IceCube. The exact improvement depends on the DM profile and the subhalo concentration model. In some models, IceCube can achieve the sensitivity of similar to 10(-26) cm(3) s(-1).
学科领域Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.78.065027
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语种英语
WOS研究方向Astronomy & Astrophysics ; Physics
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
WOS记录号WOS:000259692800171
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文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/240733
专题粒子天体物理中心
实验物理中心
作者单位中国科学院高能物理研究所
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Yin, PF,Liu, J,Yuan Q,et al. Constraints on the dark matter annihilations by neutrinos with substructure effects included[J]. PHYSICAL REVIEW D,2008,78(6):65027.
APA Yin, PF.,Liu, J.,袁强.,毕效军.,Yuan, Q.,...&Zhu, SH.(2008).Constraints on the dark matter annihilations by neutrinos with substructure effects included.PHYSICAL REVIEW D,78(6),65027.
MLA Yin, PF,et al."Constraints on the dark matter annihilations by neutrinos with substructure effects included".PHYSICAL REVIEW D 78.6(2008):65027.
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