Interpretation of the DAMPE 1.4 TeV peak according to the decaying dark matter model

doi:10.1007/s11433-018-9257-3

	Interpretation of the DAMPE 1.4 TeV peak according to the decaying dark matter model
	Pan, Xu 1,2; Zhang, Cun 3; Feng, Lei 1,2
刊名	SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
	2018-10-01
卷号	61 期号:10 页码:7
关键词	dark matter cosmic ray DAMPE
ISSN号	1674-7348
DOI	10.1007/s11433-018-9257-3
英文摘要	Highly accurate measurements of cosmic ray electron flux by the dark matter particle explorer (DAMPE) ranging between 25 GeV and 4.6 TeV have recently been published. A sharp peak structure was found at 1.4 TeV. This unexpected peak structure can be reproduced by the annihilation/decay of a nearby dark matter (DM) halo. In this study, we adopt the decaying-DM model to interpret the 1.4 TeV peak. We found that the decay products of the local DM subhalo could contribute to the DMAPE peak with m (DM) = 3 TeV and tau 10(28) s. We also obtain constraints on DM lifetime and the distance of the local DM subhalo by comparison with DAMPE data.
WOS关键词	RAY ELECTRON EXCESS ; COSMIC-RAYS ; ELECTRON/POSITRON EXCESSES ; POSITRON EXCESS ; PROPAGATION ; GALAXY ; CONSTRAINTS ; CANDIDATES ; SECONDARY ; SPECTRUM
WOS研究方向	Physics
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000441345500001
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/21596]
专题	中国科学院紫金山天文台
通讯作者	Feng, Lei
作者单位	1.Chinese Acad Sci, Key Lab Dark Matter & Space Astron, Nanjing 210008, Jiangsu, Peoples R China 2.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China 3.Nanjing Univ, Sch Phys, Nanjing 210092, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Pan, Xu,Zhang, Cun,Feng, Lei. Interpretation of the DAMPE 1.4 TeV peak according to the decaying dark matter model[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2018,61(10):7.
APA	Pan, Xu,Zhang, Cun,&Feng, Lei.(2018).Interpretation of the DAMPE 1.4 TeV peak according to the decaying dark matter model.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,61(10),7.
MLA	Pan, Xu,et al."Interpretation of the DAMPE 1.4 TeV peak according to the decaying dark matter model".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 61.10(2018):7.