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Kang, ZF; Li, TJ; Kang, ZF (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
Asymmetric origin for gravitino relic density in the hybrid gravity-gauge mediated supersymmetry breaking
Source PublicationJOURNAL OF HIGH ENERGY PHYSICS
Language英语
KeywordFermion-number Violation Dark-matter Cosmological Baryon Mu-problem Particle Universe Models Leptogenesis Unification Symmetry
AbstractWe 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.
2012
ISSN1029-8479
Issue10Pages:150
Subject AreaPhysics
Indexed BySCI
Funding OrganizationNatural Science Foundation of China [10821504, 11075194, 11135003, 11275246]; DOE [DE-FG03-95-Er-40917] ; Natural Science Foundation of China [10821504, 11075194, 11135003, 11275246]; DOE [DE-FG03-95-Er-40917] ; Natural Science Foundation of China [10821504, 11075194, 11135003, 11275246]; DOE [DE-FG03-95-Er-40917] ; Natural Science Foundation of China [10821504, 11075194, 11135003, 11275246]; DOE [DE-FG03-95-Er-40917]
Citation statistics
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/15020
Collection理论物理所科研产出_SCI论文
Corresponding AuthorKang, ZF (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Kang, ZF,Li, TJ,Kang, ZF . Asymmetric origin for gravitino relic density in the hybrid gravity-gauge mediated supersymmetry breaking[J]. JOURNAL OF HIGH ENERGY PHYSICS,2012(10):150.
APA Kang, ZF,Li, TJ,&Kang, ZF .(2012).Asymmetric origin for gravitino relic density in the hybrid gravity-gauge mediated supersymmetry breaking.JOURNAL OF HIGH ENERGY PHYSICS(10),150.
MLA Kang, ZF,et al."Asymmetric origin for gravitino relic density in the hybrid gravity-gauge mediated supersymmetry breaking".JOURNAL OF HIGH ENERGY PHYSICS .10(2012):150.
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