PMO OpenIR
Possible Dark Matter Annihilation Signal in the AMS-02 Antiproton Data
Cui, Ming-Yang1,2; Yuan, Qiang1,3; Tsai, Yue-Lin Sming2,4; Fan, Yi-Zhong1,3
2017-05-09
Source PublicationPHYSICAL REVIEW LETTERS
ISSN0031-9007
Volume118Issue:19Pages:5
Corresponding AuthorYuan, Qiang(yuanq@pmo.ac.cn) ; Fan, Yi-Zhong(yzfan@pmo.ac.cn)
AbstractUsing the latest AMS-02 cosmic-ray antiproton flux data, we search for a potential dark matter annihilation signal. The background parameters about the propagation, source injection, and solar modulation are not assumed a priori but based on the results inferred from the recent B/C ratio and proton data measurements instead. The possible dark matter signal is incorporated into the model self-consistently under a Bayesian framework. Compared with the astrophysical background-only hypothesis, we find that a dark matter signal is favored. The rest mass of the dark matter particles is similar to 20-80 GeV, and the velocity-averaged hadronic annihilation cross section is about (0.2-5) x 10(-26) cm(3) s(-1), in agreement with that needed to account for the Galactic center GeV excess and/or the weak GeV emission from dwarf spheroidal galaxies Reticulum 2 and Tucana III. Tight constraints on the dark matter annihilation models are also set in a wide mass region.
DOI10.1103/PhysRevLett.118.191101
WOS KeywordCOSMIC-RAY PROPAGATION ; RADIAL-DISTRIBUTION ; BAYESIAN-ANALYSIS ; DIFFUSION-MODEL ; FERMI-LAT ; GALAXY ; NUCLEI ; CONSTRAINTS ; PARAMETERS ; SPECTRA
Indexed BySCI
Language英语
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
WOS IDWOS:000401239700001
PublisherAMER PHYSICAL SOC
Citation statistics
Cited Times:37[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/23091
Collection中国科学院紫金山天文台
Corresponding AuthorYuan, Qiang; Fan, Yi-Zhong
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210008, Jiangsu, Peoples R China
2.Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China
3.Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Anhui, Peoples R China
4.Natl Ctr Theoret Sci, Phys Div, Hsinchu 300, Taiwan
Recommended Citation
GB/T 7714
Cui, Ming-Yang,Yuan, Qiang,Tsai, Yue-Lin Sming,et al. Possible Dark Matter Annihilation Signal in the AMS-02 Antiproton Data[J]. PHYSICAL REVIEW LETTERS,2017,118(19):5.
APA Cui, Ming-Yang,Yuan, Qiang,Tsai, Yue-Lin Sming,&Fan, Yi-Zhong.(2017).Possible Dark Matter Annihilation Signal in the AMS-02 Antiproton Data.PHYSICAL REVIEW LETTERS,118(19),5.
MLA Cui, Ming-Yang,et al."Possible Dark Matter Annihilation Signal in the AMS-02 Antiproton Data".PHYSICAL REVIEW LETTERS 118.19(2017):5.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Cui, Ming-Yang]'s Articles
[Yuan, Qiang]'s Articles
[Tsai, Yue-Lin Sming]'s Articles
Baidu academic
Similar articles in Baidu academic
[Cui, Ming-Yang]'s Articles
[Yuan, Qiang]'s Articles
[Tsai, Yue-Lin Sming]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Cui, Ming-Yang]'s Articles
[Yuan, Qiang]'s Articles
[Tsai, Yue-Lin Sming]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.