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Revisit of cosmic ray antiprotons from dark matter annihilation with updated constraints on the background model from AMS-02 and collider data
Cui, Ming-Yang1,2; Pan, Xu1; Yuan, Qiang2,3,4; Fan, Yi-Zhong2,3; Zong, Hong-Shi1
2018-06-01
Source PublicationJOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
ISSN1475-7516
Issue6Pages:14
Abstract

We study the cosmic ray antiprotons with updated constraints on the propagation, proton injection, and solar modulation parameters based on the newest AMS-02 data near the Earth and Voyager data in the local interstellar space, and on the cross section of antiproton production due to proton-proton collisions based on new collider data. We use a Bayesian approach to properly consider the uncertainties of the model predictions of both the background and the dark matter (DM) annihilation components of antiprotons. We find that including an extra component of antiprotons from the annihilation of DM particles into a pair of quarks can improve the fit to the AMS-02 antiproton data considerably. The favored mass of DM particles is about 60 similar to 100 GeV, and the annihilation cross section is just at the level of the thermal production of DM ( similar to O (10(-26)) cm(3) s(-1)).

Keywordcosmic ray theory dark matter theory
DOI10.1088/1475-7516/2018/06/024
WOS KeywordSOLAR MODULATION ; INTERSTELLAR-MEDIUM ; BAYESIAN-ANALYSIS ; HELIUM SPECTRA ; PROPAGATION ; PROTON ; NUCLEI ; FLIGHT ; FLUX ; ELECTRONS
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics ; Physics
WOS SubjectAstronomy & Astrophysics ; Physics, Particles & Fields
WOS IDWOS:000435204100003
PublisherIOP PUBLISHING LTD
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/21956
Collection中国科学院紫金山天文台
Corresponding AuthorYuan, Qiang; Zong, Hong-Shi
Affiliation1.Nanjing Univ, Sch Phys, Nanjing 210093, Jiangsu, Peoples R China
2.Chinese Acad Sci, Key Lab Dark Matter & Space Astron, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
3.Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Anhui, Peoples R China
4.Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China
Recommended Citation
GB/T 7714
Cui, Ming-Yang,Pan, Xu,Yuan, Qiang,et al. Revisit of cosmic ray antiprotons from dark matter annihilation with updated constraints on the background model from AMS-02 and collider data[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2018(6):14.
APA Cui, Ming-Yang,Pan, Xu,Yuan, Qiang,Fan, Yi-Zhong,&Zong, Hong-Shi.(2018).Revisit of cosmic ray antiprotons from dark matter annihilation with updated constraints on the background model from AMS-02 and collider data.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(6),14.
MLA Cui, Ming-Yang,et al."Revisit of cosmic ray antiprotons from dark matter annihilation with updated constraints on the background model from AMS-02 and collider data".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .6(2018):14.
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