ITP OpenIR  > 理论物理所2013年知识产出
Sommerfeld enhancements with vector, scalar, and pseudoscalar force carriers
Liu, ZP; Wu, YL; Zhou, YF; Liu, ZP (reprint author), Chinese Acad Sci, Inst Theoret Phys, Kavli Inst Theoret Phys China, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
2013
发表期刊PHYSICAL REVIEW D
ISSN1550-7998
卷号88期号:9页码:96008
摘要The first AMS-02 measurement confirms the existence of an excess in the cosmic-ray positron fraction previously reported by the PAMELA and Fermi-LAT experiments. If interpreted in terms of thermal dark matter (DM) annihilation, the AMS-02 result still suggests that the DM annihilation cross section in the present day should be significantly larger than that at freeze-out. The Sommerfeld enhancement of the DM annihilation cross section is a possible explanation, which is however subject to the constraints from DM thermal relic density, mainly due to the annihilation of DM particles into force-carrier particles introduced by the mechanism. We show that the effects of the Sommerfeld enhancement and the relic density constraints depend significantly on the nature of the force carrier. Three scenarios where the force carrier is a vector boson, scalar, and pseudoscalar particle are investigated and compared. The results show that for the case with a vector force carrier, the Sommerfeld enhancement can marginally account for the AMS-02 data for the DM particle annihilating into 2 mu final states, while for the scalar force carrier the allowed Sommerfeld enhancement factor can be larger by a factor of 2. For the case with a pseudoscalar force carrier, the Sommerfeld enhancement factor can be very large in the resonance region, and it is possible to accommodate the AMS-02 and Fermi-LAT result for a variety of DM annihilation final states.
部门归属[Liu, Ze-Peng; Wu, Yue-Liang; Zhou, Yu-Feng] Chinese Acad Sci, Inst Theoret Phys, Kavli Inst Theoret Phys China, State Key Lab Theoret Phys, Beijing 100190, Peoples R China; [Wu, Yue-Liang] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
关键词Dark-matter Electrons Energies
学科领域Physics
资助者National Basic Research Program of China (973 Program) [2010CB833000]; National Nature Science Foundation of China (NSFC) [10975170, 10821504, 10905084]; Chinese Academy of Science ; National Basic Research Program of China (973 Program) [2010CB833000]; National Nature Science Foundation of China (NSFC) [10975170, 10821504, 10905084]; Chinese Academy of Science ; National Basic Research Program of China (973 Program) [2010CB833000]; National Nature Science Foundation of China (NSFC) [10975170, 10821504, 10905084]; Chinese Academy of Science ; National Basic Research Program of China (973 Program) [2010CB833000]; National Nature Science Foundation of China (NSFC) [10975170, 10821504, 10905084]; Chinese Academy of Science
URL查看原文
收录类别SCI
语种英语
资助者National Basic Research Program of China (973 Program) [2010CB833000]; National Nature Science Foundation of China (NSFC) [10975170, 10821504, 10905084]; Chinese Academy of Science ; National Basic Research Program of China (973 Program) [2010CB833000]; National Nature Science Foundation of China (NSFC) [10975170, 10821504, 10905084]; Chinese Academy of Science ; National Basic Research Program of China (973 Program) [2010CB833000]; National Nature Science Foundation of China (NSFC) [10975170, 10821504, 10905084]; Chinese Academy of Science ; National Basic Research Program of China (973 Program) [2010CB833000]; National Nature Science Foundation of China (NSFC) [10975170, 10821504, 10905084]; Chinese Academy of Science
WOS记录号WOS:000327209200008
引用统计
被引频次:18[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/15232
专题理论物理所2013年知识产出
通讯作者Liu, ZP (reprint author), Chinese Acad Sci, Inst Theoret Phys, Kavli Inst Theoret Phys China, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
推荐引用方式
GB/T 7714
Liu, ZP,Wu, YL,Zhou, YF,et al. Sommerfeld enhancements with vector, scalar, and pseudoscalar force carriers[J]. PHYSICAL REVIEW D,2013,88(9):96008.
APA Liu, ZP,Wu, YL,Zhou, YF,&Liu, ZP .(2013).Sommerfeld enhancements with vector, scalar, and pseudoscalar force carriers.PHYSICAL REVIEW D,88(9),96008.
MLA Liu, ZP,et al."Sommerfeld enhancements with vector, scalar, and pseudoscalar force carriers".PHYSICAL REVIEW D 88.9(2013):96008.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
Sommerfeld enhanceme(525KB) 开放获取使用许可请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Liu, ZP]的文章
[Wu, YL]的文章
[Zhou, YF]的文章
百度学术
百度学术中相似的文章
[Liu, ZP]的文章
[Wu, YL]的文章
[Zhou, YF]的文章
必应学术
必应学术中相似的文章
[Liu, ZP]的文章
[Wu, YL]的文章
[Zhou, YF]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

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。