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Du, G; Li, TJ; Nanopoulos, DV; Raza, S; Du, G (reprint author), Chinese Acad Sci, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
Supernatural MSSM
Source PublicationPHYSICAL REVIEW D
Language英语
AbstractWe point out that the electroweak fine-tuning problem in the supersymmetric standard models (SSMs) is mainly due to the high energy definition of the fine-tuning measure. We propose supernatural supersymmetry which has an order one high energy fine-tuning measure automatically. The key point is that all the mass parameters in the SSMs arise from a single supersymmetry breaking parameter. In this paper, we show that there is no supersymmetry electroweak fine-tuning problem explicitly in the minimal SSM (MSSM) with no-scale supergravity and Giudice-Masiero mechanism. We demonstrate that the Z-boson mass, the supersymmetric Higgs mixing parameter mu at the unification scale, and the sparticle spectrum can be given as functions of the universal gaugino mass M-1/2. Because the light stau is the lightest supersymmetric particle (LSP) in the no-scale MSSM, to preserve R parity, we introduce a non-thermally generated axino as the LSP dark matter candidate. We estimate the lifetime of the light stau by calculating its two-body and three-body decays to the LSP axino for several values of axion decay constant f(a), and find that the light stau has a lifetime tau((tau) over bar1) in [10(-4), 100] s for an f(a) range [10(9), 10(12)] GeV. We show that our next to the LSP stau solutions are consistent with all the current experimental constraints, including the sparticle mass bounds, B-physics bounds, Higgs mass, cosmological bounds, and the bounds on long-lived charged particles at the LHC.
2015
Volume92Issue:2Pages:25038
Subject AreaAstronomy & Astrophysics ; Physics
DOIhttp://dx.doi.org/10.1103/PhysRevD.92.025038
Indexed BySCI
Funding OrganizationNatural Science Foundation of China [10821504, 11075194, 11135003, 11275246, 11475238] ; Natural Science Foundation of China [10821504, 11075194, 11135003, 11275246, 11475238] ; Natural Science Foundation of China [10821504, 11075194, 11135003, 11275246, 11475238] ; Natural Science Foundation of China [10821504, 11075194, 11135003, 11275246, 11475238] ; National Basic Research Program of China (973 Program) [2010CB833000] ; National Basic Research Program of China (973 Program) [2010CB833000] ; National Basic Research Program of China (973 Program) [2010CB833000] ; National Basic Research Program of China (973 Program) [2010CB833000] ; U.S. Department of Energy Award [DE-FG03-95-ER-40917] ; U.S. Department of Energy Award [DE-FG03-95-ER-40917] ; U.S. Department of Energy Award [DE-FG03-95-ER-40917] ; U.S. Department of Energy Award [DE-FG03-95-ER-40917]
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/20917
Collection理论物理所科研产出_SCI论文
Corresponding AuthorDu, G (reprint author), Chinese Acad Sci, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Du, G,Li, TJ,Nanopoulos, DV,et al. Supernatural MSSM[J]. PHYSICAL REVIEW D,2015,92(2):25038.
APA Du, G,Li, TJ,Nanopoulos, DV,Raza, S,&Du, G .(2015).Supernatural MSSM.PHYSICAL REVIEW D,92(2),25038.
MLA Du, G,et al."Supernatural MSSM".PHYSICAL REVIEW D 92.2(2015):25038.
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