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题名: Asymmetric origin for gravitino relic density in the hybrid gravity-gauge mediated supersymmetry breaking
作者: Kang, ZF ;  Li, TJ
刊名: JOURNAL OF HIGH ENERGY PHYSICS
出版日期: 2012
期号: 10, 页码:150
关键词: FERMION-NUMBER VIOLATION ;  DARK-MATTER ;  COSMOLOGICAL BARYON ;  MU-PROBLEM ;  PARTICLE ;  UNIVERSE ;  MODELS ;  LEPTOGENESIS ;  UNIFICATION ;  SYMMETRY
学科分类: Physics
通讯作者: Kang, ZF (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
部门归属: [Kang, Zhaofeng; Li, Tianjun] Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China; [Li, Tianjun] Texas A&M Univ, George P & Cynthia W Mitchell Inst Fundamental Ph, College Stn, TX 77843 USA
英文摘要: We propose the hybrid gravity-gauge mediated supersymmetry breaking where the gravitino mass is about several GeV. The strong constraints on supersymmetry viable parameter space from the CMS and ATLAS experiments at the LHC can be relaxed due to the heavy colored supersymmetric particles, and it is consistent with null results in the dark matter (DM) direct search experiments such as XENON100. In particular, the possible maximal flavor and CP violations from the relatively small gravity mediation may naturally account for the recent LHCb anomaly. In addition, because the gravitino mass is around the asymmetric DM mass, we propose the asymmetric origin of the gravitino relic density and solve the cosmological coincident problem on the DM and baryon densities Omega(DM) : Omega(B) approximate to 5 : 1. The gravitino relic density arises from asymmetric metastable particle (AMP) late decay. However, we show that there is no AMP candidate in the minimal supersymmetric Standard Model (SM) due to the robust gaugino/Higgsino mediated washout effects. Interestingly, AMP can be realized in the well motivated supersymmetric SMs with vector-like particles or continuous U(1)(R) symmetry. Especially, the lightest CP-even Higgs boson mass can be lifted in the supersymmetric SMs with vector-like particles.
资助者: Natural Science Foundation of China [10821504, 11075194, 11135003, 11275246]; DOE [DE-FG03-95-Er-40917]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000310851300049
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15020
Appears in Collections:理论物理所2012年知识产出_期刊论文

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Recommended Citation:
Kang, ZF,Li, TJ. Asymmetric origin for gravitino relic density in the hybrid gravity-gauge mediated supersymmetry breaking[J]. JOURNAL OF HIGH ENERGY PHYSICS,2012(10):150.
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