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Interpretations of the possible 42.7 GeV gamma-ray line
Feng, Lei; Liang, Yun-Feng; Dong, Tie-Kuang; Fan, Yi-Zhong
2016
Source PublicationPHYSICAL REVIEW D
Volume94Issue:4Pages:64
AbstractRecently Liang et al. [Phys. Rev. D93, 103525 (2016)] found a tentative line signal at about 43 GeVin the directions of 16 nearby galaxy clusters. If arising from dark matter annihilation, the mass of the dark matter particles should be m(chi) similar to 43 GeV and the annihilation cross section similar to 5 x 10(-28) ((BF) over bar= 10(3))(-1) cm(3) s(-1) is needed, where (BF) over bar is the averaged boost factor of the annihilation signal of these galaxy clusters. In this work we discuss several models which could interpret these features and estimate the model parameters. Usually a sizeable coupling parameter is needed. The 2 sigma upper limits on the cross section of the dark matter annihilation into various final states such as b (b) over bar, mu(+)mu(-) and so on are also presented.
DOI10.1103/PhysRevD.94.043535
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Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/16812
Collection暗物质和空间天文实验室
Recommended Citation
GB/T 7714
Feng, Lei,Liang, Yun-Feng,Dong, Tie-Kuang,et al. Interpretations of the possible 42.7 GeV gamma-ray line[J]. PHYSICAL REVIEW D,2016,94(4):64.
APA Feng, Lei,Liang, Yun-Feng,Dong, Tie-Kuang,&Fan, Yi-Zhong.(2016).Interpretations of the possible 42.7 GeV gamma-ray line.PHYSICAL REVIEW D,94(4),64.
MLA Feng, Lei,et al."Interpretations of the possible 42.7 GeV gamma-ray line".PHYSICAL REVIEW D 94.4(2016):64.
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