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Constraints on the box-shaped cosmic ray electron feature from dark matter annihilation with the AMS-02 and DAMPE data
Zu, Lei1,2; Zhang, Cun1,3; Feng, Lei1; Yuan, Qiang1,2; Fan, Yi-Zhong1,2
2018-09-19
Source PublicationPHYSICAL REVIEW D
ISSN2470-0010
Volume98Issue:6Pages:8
Abstract

Precise measurements of spectra of cosmic ray electrons and positrons can effectively probe the nature of dark matter (DM) particles. In a class of models where DM particles initially annihilate into a pair of intermediate particles which then decay into standard model particles, box-shaped spectra can be generated. Such spectra are distinct from astrophysical backgrounds and can probably be regarded as characteristic features of the DM annihilation. In this work, we search for such a feature in the total electron plus positron spectrum measured by AMS-02 and DAMPE. No significant evidence for such a DM annihilation component has been found. The 95% confidence level upper limits of the velocity-weighted annihilation cross section are derived, which range from similar to 10(-26) cm(3) s(-1) for DM mass of 50 GeV to similar to 10(-23) cm(3) s(-1) for DM mass of 10 TeV.

DOI10.1103/PhysRevD.98.063010
WOS KeywordEXCESS ; ENERGIES
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics ; Physics
WOS SubjectAstronomy & Astrophysics ; Physics, Particles & Fields
WOS IDWOS:000445057200002
PublisherAMER PHYSICAL SOC
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/21344
Collection中国科学院紫金山天文台
Corresponding AuthorFeng, Lei; Yuan, Qiang; Fan, Yi-Zhong
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210008, Jiangsu, Peoples R China
2.Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Anhui, Peoples R China
3.Nanjing Univ, Sch Phys, Nanjing 210092, Jiangsu, Peoples R China
Recommended Citation
GB/T 7714
Zu, Lei,Zhang, Cun,Feng, Lei,et al. Constraints on the box-shaped cosmic ray electron feature from dark matter annihilation with the AMS-02 and DAMPE data[J]. PHYSICAL REVIEW D,2018,98(6):8.
APA Zu, Lei,Zhang, Cun,Feng, Lei,Yuan, Qiang,&Fan, Yi-Zhong.(2018).Constraints on the box-shaped cosmic ray electron feature from dark matter annihilation with the AMS-02 and DAMPE data.PHYSICAL REVIEW D,98(6),8.
MLA Zu, Lei,et al."Constraints on the box-shaped cosmic ray electron feature from dark matter annihilation with the AMS-02 and DAMPE data".PHYSICAL REVIEW D 98.6(2018):8.
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