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Interpretation of the DAMPE 1.4 TeV peak according to the decaying dark matter model
Pan, Xu1,2; Zhang, Cun3; Feng, Lei1,2
2018-10-01
Source PublicationSCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
ISSN1674-7348
Volume61Issue:10Pages:7
Abstract

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.

Keyworddark matter cosmic ray DAMPE
DOI10.1007/s11433-018-9257-3
WOS KeywordRAY ELECTRON EXCESS ; COSMIC-RAYS ; ELECTRON/POSITRON EXCESSES ; POSITRON EXCESS ; PROPAGATION ; GALAXY ; CONSTRAINTS ; CANDIDATES ; SECONDARY ; SPECTRUM
Indexed BySCI
Language英语
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
WOS IDWOS:000441345500001
PublisherSCIENCE PRESS
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/21597
Collection中国科学院紫金山天文台
Corresponding AuthorFeng, Lei
Affiliation1.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
Recommended Citation
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.
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