中国科学院理论物理研究所机构知识库
Advanced  
ITP OpenIR  > 理论物理所2014年知识产出  > 期刊论文
题名: Imprint of multicomponent dark matter on AMS-02
作者: Geng, CQ;  Huang, D;  Tsai, LH
刊名: PHYSICAL REVIEW D
出版日期: 2014
卷号: 89, 期号:5, 页码:55021
关键词: COSMIC-RAY ELECTRONS ;  GAMMA-RAY ;  POSITRON FRACTION ;  PAMELA ;  EXCESS ;  PROPAGATION ;  ENERGIES ;  MODELS ;  BOUNDS ;  MASS
学科分类: Physics
DOI: 10.1103/PhysRevD.89.055021
通讯作者: Geng, CQ (reprint author), Natl Tsing Hua Univ, Dept Phys, Hsinchu, Taiwan.
部门归属: [Geng, Chao-Qiang
英文摘要: The multicomponent decaying dark matter (DM) scenario is investigated to explain the possible excesses in the positron fraction by PAMELA and recently confirmed by AMS-02, and in the total e(+) + e(-) flux observed by Fermi-LAT. By performing the chi(2) fits, we find that two DM components are already enough to give a reasonable fit of both AMS-02 and Fermi-LAT data. The best-fitted results show that the heavier DM component with its mass of 1.5 TeV dominantly decays through the mu channel, while the lighter one of 100 GeV decays mainly through the tau channel. As a by-product, the fine structure around 100 GeV observed by AMS-02 and Fermi-LAT can be naturally explained by the dropping due to the lighter DM component. With the obtained model parameters by the fitting, we calculate the diffuse gamma-ray emission spectrum in this two-component DM scenario, and find that it is consistent with the data measured by Fermi-LAT. We also construct a microscopic particle DM model to naturally realize the two-component DM scenario, and point out an interesting neutrino signal which will possibly be measured in the near future by IceCube.
资助者: National Center for Theoretical Science; National Science Council [NSC-101-2112-M-007-006-MY3]; National Tsing Hua University [102N1087E1, 102N2725E1]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000334305300006
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15803
Appears in Collections:理论物理所2014年知识产出 _期刊论文

Files in This Item: Download All
File Name/ File Size Content Type Version Access License
Imprint of multicomponent dark matter on AMS-02.pdf(382KB)期刊论文出版稿开放获取View Download

Recommended Citation:
Geng, CQ,Huang, D,Tsai, LH. Imprint of multicomponent dark matter on AMS-02[J]. PHYSICAL REVIEW D,2014,89(5):55021.
Service
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Geng, CQ]'s Articles
 [Huang, D]'s Articles
 [Tsai, LH]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Geng, CQ]‘s Articles
 [Huang, D]‘s Articles
 [Tsai, LH]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
  Add to CiteULike  Add to Connotea  Add to Del.icio.us  Add to Digg  Add to Reddit 
文件名: Imprint of multicomponent dark matter on AMS-02.pdf
格式: Adobe PDF
此文件暂不支持浏览
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Copyright © 2007-2017  中国科学院理论物理研究所 - Feedback
Powered by CSpace