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题名: Enhancement of dark matter annihilation via Breit-Wigner resonance
作者: Guo, Wan-Lei ;  Wu, Yue-Liang
刊名: PHYSICAL REVIEW D
出版日期: 2009
卷号: 79, 期号:5, 页码:-
关键词: ABUNDANCES
学科分类: Physics
通讯作者: Guo, WL , Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China
部门归属: [Guo, WL; Wu, YL] Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China
英文摘要: The Breit-Wigner enhancement of the thermally averaged annihilation cross section is shown to provide a large boost factor when the dark matter annihilation process nears a narrow resonance. We explicitly demonstrate the evolution behavior of the Breit-Wigner enhanced as the function of universe temperature for both the physical and unphysical pole cases. It is found that both of the cases can lead a large enough boost factor to explain the recent PAMELA, ATIC, and PPB-BETS anomalies. We also calculate the coupling of the annihilation process, which is useful for an appropriate model building to give the desired dark matter relic density.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000264762400067
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5362
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Guo, Wan-Lei,Wu, Yue-Liang. Enhancement of dark matter annihilation via Breit-Wigner resonance[J]. PHYSICAL REVIEW D,2009,79(5):-.
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