Asymmetric origin for gravitino relic density in the hybrid gravity-gauge mediated supersymmetry breaking

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	Asymmetric origin for gravitino relic density in the hybrid gravity-gauge mediated supersymmetry breaking
	Li, TJ
刊名	JOURNAL OF HIGH ENERGY PHYSICS
	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
ISSN号	1029-8479
通讯作者	Kang, ZF (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
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.
学科主题	Physics
收录类别	SCI
资助信息	Natural Science Foundation of China [10821504, 11075194, 11135003, 11275246]; DOE [DE-FG03-95-Er-40917]
原文出处	http://dx.doi.org/10.1007/JHEP10(2012)150
语种	英语
WOS记录号	WOS:000310851300049
公开日期	2014-04-25
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/15020]
专题	理论物理研究所_理论物理所1978-2010年知识产出
推荐引用方式 GB/T 7714	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.
APA	Li, TJ.(2012).Asymmetric origin for gravitino relic density in the hybrid gravity-gauge mediated supersymmetry breaking.JOURNAL OF HIGH ENERGY PHYSICS(10),150.
MLA	Li, TJ."Asymmetric origin for gravitino relic density in the hybrid gravity-gauge mediated supersymmetry breaking".JOURNAL OF HIGH ENERGY PHYSICS .10(2012):150.