Explanations of the DAMPE high energy electron/positron spectrum in the dark matter annihilation and pulsar scenarios
文献类型：期刊论文
| 作者 | Yin, PF ; Bi, XJ; Bi XJ(毕效军); Lin SJ(林苏杰); Yin PF(殷鹏飞); Wang, BB; Lin, SJ; Wang BB(王兵兵)
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| 刊名 | SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
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| 出版日期 | 2018 |
| 卷号 | 61期号:10页码:101004 |
| ISSN号 | 1674-7348 |
| DOI | 10.1007/s11433-018-9244-y |
| 文献子类 | Article |
| 英文摘要 | Many studies have shown that either the nearby astrophysical source or dark matter (DM) annihilation/decay can be used to explain the excess of high energy cosmic ray (CR) e (+/-), which is detected by many experiments, such as PAMELA and AMS-02. Recently, the dark matter particle explorer (DAMPE) collaboration has reported its first result of the total CR e (+/-) spectrum from 25 GeV to 4.6 TeV with high precision. In this work, we study the DM annihilation and pulsar interpretations of this result. We show that the leptonic DM annihilation channels to tau (+) tau (-), 4 mu, 4 tau, and mixed charged lepton final states can well explain the DAMPE e (+/-) spectrum. We also find that the mixed charged leptons channel would lead to a sharp drop structure at similar to TeV. However, the ordinary DM explanations have been almost excluded by the constraints from the observations of gamma-ray and CMB, unless some exotic DM models are introduced. In the pulsar scenario, we analyze 21 nearby known pulsars and assume that one of them dominantly contributes to the high energy CR e (+/-) spectrum. Involving the constraint from the Fermi-LAT observation of the e +/- anisotropy, we find that two pulsars could explain the DAMPE e (+/-) spectrum. Our results show that it is difficult to discriminate between the DM annihilation and single pulsar explanations of high energy e (+/-) with the current DAMPE result. |
| 电子版国际标准刊号 | 1869-1927 |
| WOS关键词 | COSMIC-RAY ELECTRONS ; SUPERNOVA-REMNANTS ; GAMMA-RAY ; FERMI-LAT ; CONSTRAINTS ; POSITRONS ; MODEL ; PROPAGATION ; ANISOTROPY ; DENSITY |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| CSCD记录号 | CSCD:6384368 |
| WOS记录号 | WOS:000441432100002 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/286209]  |
| 专题 | 高能物理研究所_粒子天体物理中心 高能物理研究所_核技术应用研究中心 |
| 通讯作者 | Yin PF(殷鹏飞) |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Yin, PF,Bi, XJ,Bi XJ,et al. Explanations of the DAMPE high energy electron/positron spectrum in the dark matter annihilation and pulsar scenarios[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2018,61(10):101004. |
| APA | Yin, PF.,Bi, XJ.,毕效军.,林苏杰.,殷鹏飞.,...&王兵兵.(2018).Explanations of the DAMPE high energy electron/positron spectrum in the dark matter annihilation and pulsar scenarios.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,61(10),101004. |
| MLA | Yin, PF,et al."Explanations of the DAMPE high energy electron/positron spectrum in the dark matter annihilation and pulsar scenarios".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 61.10(2018):101004. |
入库方式： OAI收割
来源：高能物理研究所
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