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 | |
刊名 | JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS |
2018-06-01 | |
期号 | 6页码:14 |
关键词 | cosmic ray theory dark matter theory |
ISSN号 | 1475-7516 |
DOI | 10.1088/1475-7516/2018/06/024 |
英文摘要 | 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)). |
WOS关键词 | SOLAR MODULATION ; INTERSTELLAR-MEDIUM ; BAYESIAN-ANALYSIS ; HELIUM SPECTRA ; PROPAGATION ; PROTON ; NUCLEI ; FLIGHT ; FLUX ; ELECTRONS |
WOS研究方向 | Astronomy & Astrophysics ; Physics |
语种 | 英语 |
出版者 | IOP PUBLISHING LTD |
WOS记录号 | WOS:000435204100003 |
内容类型 | 期刊论文 |
源URL | [http://libir.pmo.ac.cn/handle/332002/21955] |
专题 | 中国科学院紫金山天文台 |
通讯作者 | Yuan, Qiang; Zong, Hong-Shi |
作者单位 | 1.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 |
推荐引用方式 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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