Possible Dark Matter Annihilation Signal in the AMS-02 Antiproton Data
文献类型：期刊论文
| 作者 | Cui, Ming-Yang; Yuan, Qiang; Tsai, Yue-Lin Sming; Fan, Yi-Zhong |
| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2017 |
| 卷号 | 118期号:19页码:191101- |
| 英文摘要 | Using 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. |
| 语种 | 英语 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/17451]  |
| 专题 | 中国科学院紫金山天文台 |
| 推荐引用方式 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):191101-. |
| 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),191101-. |
| MLA | Cui, Ming-Yang,et al."Possible Dark Matter Annihilation Signal in the AMS-02 Antiproton Data".PHYSICAL REVIEW LETTERS 118.19(2017):191101-. |
入库方式： OAI收割
来源：紫金山天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。