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题名: Spin 3/2 particle as a dark matter candidate: an effective field theory approach
作者: Ding, R ;  Liao, Y
刊名: JOURNAL OF HIGH ENERGY PHYSICS
出版日期: 2012
期号: 4, 页码:54
关键词: MASSIVE PARTICLES ;  CROSS-SECTIONS ;  COSMIC-RAYS ;  PROPAGATION ;  NUCLEONS ;  GALAXY
学科分类: Physics
通讯作者: Ding, R (reprint author), Nankai Univ, Sch Phys, Tianjin 300071, Peoples R China.
部门归属: [Ding, Ran; Liao, Yi] Nankai Univ, Sch Phys, Tianjin 300071, Peoples R China; [Liao, Yi] Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China; [Liao, Yi] Chinese Acad Sci, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China
英文摘要: There is no indication so far on the spin of dark matter particles. We consider the possibility in this work that a spin-3/2 particle acts as dark matter. Employing the approach of effective field theory, we list all possible 4-fermion effective interactions between a pair of such fields and a pair of ordinary fermion fields. We investigate the implications of the proposal on the relic density, the antiproton to proton flux ratio in cosmic rays, and the elastic scattering off nuclei in direct detection. While the relic density and flux ratio are sensitive to all interactions albeit at different levels, the direct detection is only sensitive to a few of them. Using the observed data and experimental bounds, we set constraints on the relation of couplings and dark particle mass. In particular, we find that some mass ranges can already be excluded by jointly applying the observed relic density on the one side and the measured antiproton to proton flux ratio or the upper bounds from direct detection on the other.
资助者: Fundamental Research Funds for the Central Universities [65030021]; [NSFC-11025525]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000304146600054
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15124
Appears in Collections:理论物理所2012年知识产出_期刊论文

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Recommended Citation:
Ding, R,Liao, Y. Spin 3/2 particle as a dark matter candidate: an effective field theory approach[J]. JOURNAL OF HIGH ENERGY PHYSICS,2012(4):54.
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