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PAMELA/Fermi-LAT electron cosmic ray spectrum at similar to 100 GeV: Implication for dark matter annihilation signal in accordance with the 130 GeV gamma-ray line
Feng, Lei1; Yuan, Qiang1,2; Li, Xiang1; Fan, Yi-Zhong1
2013-03-13
Source PublicationPHYSICS LETTERS B
ISSN0370-2693
Volume720Issue:1-3Pages:1-5
Corresponding AuthorFan, YZ (reprint author), Chinese Acad Sci, Key Lab Dark Matter & Space Astron, Purple Mt Observ, Nanjing 210008, Peoples R China. Email: yzfan@pmo.ac.cn
AbstractRecently, a tentative 130 GeV gamma-ray line signal was identified by quite a few groups. If correct it would constitute a "smoking gun" for dark matter annihilations. Interestingly, the spectra of the cosmic ray electrons detected by PAMELA and Fermi-LAT. both show tiny wiggle-like structure at similar to 100 GeV, which might indicate a weak signal of the annihilation of similar to 130 GeV dark matter particles into electrons/positrons with a velocity-weighted cross section (sigma nu)chi chi -> e(+),e(-) similar to 4 x 10(-26) cm(3) s(-1). The prospect of identifying such a potential weak dark-matter-annihilation electron and/or positron component by AMS-02, a mission.to measure the high energy cosmic ray spectra with unprecedented accuracy, is investigated. (C) 2013 Elsevier B.V. All rights reserved.
Subject AreaPhysics
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1016/j.physletb.2013.01.060
WOS KeywordENERGIES
Indexed BySCI
Language英语
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
WOS IDWOS:000316513500001
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Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/9759
Collection暗物质和空间天文实验室
Affiliation1.Chinese Acad Sci, Key Lab Dark Matter & Space Astron, Purple Mt Observ, Nanjing 210008, Peoples R China
2.Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Feng, Lei,Yuan, Qiang,Li, Xiang,et al. PAMELA/Fermi-LAT electron cosmic ray spectrum at similar to 100 GeV: Implication for dark matter annihilation signal in accordance with the 130 GeV gamma-ray line[J]. PHYSICS LETTERS B,2013,720(1-3):1-5.
APA Feng, Lei,Yuan, Qiang,Li, Xiang,&Fan, Yi-Zhong.(2013).PAMELA/Fermi-LAT electron cosmic ray spectrum at similar to 100 GeV: Implication for dark matter annihilation signal in accordance with the 130 GeV gamma-ray line.PHYSICS LETTERS B,720(1-3),1-5.
MLA Feng, Lei,et al."PAMELA/Fermi-LAT electron cosmic ray spectrum at similar to 100 GeV: Implication for dark matter annihilation signal in accordance with the 130 GeV gamma-ray line".PHYSICS LETTERS B 720.1-3(2013):1-5.
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