ITP OpenIR  > 理论物理所科研产出  > SCI论文
Kang, ZF; Li, JM; Li, TJ; Kang, ZF (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
On naturalness of the MSSM and NMSSM
Source PublicationJOURNAL OF HIGH ENERGY PHYSICS
Language英语
KeywordSupersymmetric Standard Model Photon Higgs Signal Dark-matter Boson Mass Constraints Breaking Searches Sector Lhc
AbstractWith a bottom-up approach, we consider naturalness in the MSSM and NMSSM. Assuming the light stops. the LHC gluino search implies that the degree of fine tuning in both models is less than 2.5%. Taking the LHC hints for the SM-like Higgs boson mass m(h) similar to 125 GeV seriously, we find that naturalness will favor the NMSSM. We study the Higgs boson mass for several scenarios in the NMSSM: (1) A large A and the doublet-singlet Higgs boson mixing effect pushing upward or pulling downward nth. The former case can readily give the di-photon excess of the Higgs boson decay whereas the latter case can not. However, we point out that the former case has a new large fine-tuning related to strong A ROE running effect and vacuum stability. (2) A small A and the mixing effect pushing m(h) upward. Naturalness status becomes worse and no significant di-photon excess can be obtained. In these scenarios, the lightest supersymmetric particle (LSP) as a dark matter candidate is strongly disfavored by the XENON100 experiment. Even if the LSP can be a viable dark matter candidate, there does exist fine-tuning. The above naturalness evaluation is based on a high mediation scale for supersymmetry breaking, whereas for a low mediation scale, fine-tuning can be improved by about one order.
2012
ISSN1126-6708
Issue11Pages:24
Subject AreaPhysics
Indexed BySCI
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/15000
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, JM,Li, TJ,et al. On naturalness of the MSSM and NMSSM[J]. JOURNAL OF HIGH ENERGY PHYSICS,2012(11):24.
APA Kang, ZF,Li, JM,Li, TJ,&Kang, ZF .(2012).On naturalness of the MSSM and NMSSM.JOURNAL OF HIGH ENERGY PHYSICS(11),24.
MLA Kang, ZF,et al."On naturalness of the MSSM and NMSSM".JOURNAL OF HIGH ENERGY PHYSICS .11(2012):24.
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