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题名: Constraints on dark matter annihilation cross section in the brane-world and quintessence scenarios
作者: Guo, Wan-Lei ;  Zhang, Xin
刊名: PHYSICAL REVIEW D
出版日期: 2009
卷号: 79, 期号:11, 页码:-
关键词: RELIC DENSITY ;  COSMIC-RAYS ;  PARTICLES ;  ABUNDANCE ;  ENHANCEMENT ;  ENERGIES
学科分类: Physics
通讯作者: Guo, WL , Chinese Acad Sci, Kavli Inst Theoret Phys China, Key Lab Frontiers Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China
部门归属: [Guo, WL; Zhang, X] Chinese Acad Sci, Kavli Inst Theoret Phys China, Key Lab Frontiers Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China; [Zhang, X] Northeastern Univ, Dept Phys, Coll Sci, Shenyang 110004, Peoples R China
英文摘要: We investigate the dark matter annihilation in the brane-world and quintessence scenarios, in which the modified cosmological expansion rate can enhance the thermal relic density of dark matter. According to the observed dark matter abundance, we constrain the thermally averaged annihilation cross section <> in these two scenarios. In addition, the big bang nucleosynthesis and the partial-wave unitarity are also used to place bounds on <>. It is found that both scenarios can lead to a large annihilation cross section, so they can be used to explain the recent PAMELA, ATIC, and PPB-BETS anomalies.
资助者: National Natural Science Foundation of China (NSFC)[10847163, 10705041]
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000267701300092
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5304
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,Zhang, Xin. Constraints on dark matter annihilation cross section in the brane-world and quintessence scenarios[J]. PHYSICAL REVIEW D,2009,79(11):-.
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