AMS-02 positron excess and indirect detection of three-body decaying dark matter
文献类型:期刊论文
作者 | Cheng, Hsin-Chia1; Huang, Wei-Chih2; Huang, Xiaoyuan3; Low, Ian4,5; Tsai, Yue-Lin Sming6; Yuan, Qiang7,8 |
刊名 | JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS |
出版日期 | 2017-03-01 |
期号 | 3页码:23 |
ISSN号 | 1475-7516 |
关键词 | cosmic ray theory dark matter theory gamma ray theory |
DOI | 10.1088/1475-7516/2017/03/041 |
英文摘要 | We consider indirect detection of meta-stable dark matter particles decaying into a stable neutral particle and a pair of standard model fermions. Due to the softer energy spectra from the three-body decay, such models could potentially explain the AMS-02 positron excess without being constrained by the Fermi-LAT gamma-ray data and the cosmic ray anti-proton measurements. We scrutinize over different final state fermions, paying special attention to handling of the cosmic ray background and including various contributions from cosmic ray propagation with the help of the Like DM package. It is found that primary decays into an electron-positron pair and a stable neutral particle could give rise to the AMS-02 positron excess and, at the same time, stay unscathed against the gamma-ray and antiproton constraints. Decays to a muon pair or a mixed flavor electron-muon pair may also be viable depending on the propagation models. Decays to all other standard model fermions are severely disfavored. |
WOS关键词 | ELECTRON SPECTRUM ; RAY SPECTRA ; FERMI ; GALAXY ; CONSTRAINTS ; PROPAGATION ; RADIATION ; SYMMETRY ; FRACTION ; SEARCHES |
WOS研究方向 | Astronomy & Astrophysics ; Physics |
语种 | 英语 |
出版者 | IOP PUBLISHING LTD |
WOS记录号 | WOS:000405653700021 |
源URL | [http://libir.pmo.ac.cn/handle/332002/22865] |
专题 | 中国科学院紫金山天文台 |
通讯作者 | Cheng, Hsin-Chia |
作者单位 | 1.Univ Calif Davis, Dept Phys, Davis, CA 95616 USA 2.Tech Univ Dortmund, Fak Phys, D-44221 Dortmund, Germany 3.Tech Univ Munich, Phys Dept T30d, James Franck Str, D-85748 Garching, Germany 4.Argonne Natl Lab, High Energy Phys Div, Argonne, IL 60439 USA 5.Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA 6.Univ Tokyo, Kavli IPMU WPI, Kashiwa, Chiba 2778583, Japan 7.Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210008, Jiangsu, Peoples R China 8.Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Anhui, Peoples R China |
推荐引用方式 GB/T 7714 | Cheng, Hsin-Chia,Huang, Wei-Chih,Huang, Xiaoyuan,et al. AMS-02 positron excess and indirect detection of three-body decaying dark matter[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2017(3):23. |
APA | Cheng, Hsin-Chia,Huang, Wei-Chih,Huang, Xiaoyuan,Low, Ian,Tsai, Yue-Lin Sming,&Yuan, Qiang.(2017).AMS-02 positron excess and indirect detection of three-body decaying dark matter.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(3),23. |
MLA | Cheng, Hsin-Chia,et al."AMS-02 positron excess and indirect detection of three-body decaying dark matter".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .3(2017):23. |
入库方式: OAI收割
来源:紫金山天文台
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。