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On naturalness of the MSSM and NMSSM
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.
2012
发表期刊JOURNAL OF HIGH ENERGY PHYSICS
ISSN1126-6708
期号11页码:24
摘要With 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.
部门归属[Kang, Zhaofeng; Li, Jinmian; 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
关键词Supersymmetric Standard Model Photon Higgs Signal Dark-matter Boson Mass Constraints Breaking Searches Sector Lhc
学科领域Physics
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收录类别SCI
语种英语
WOS记录号WOS:000312197800024
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被引频次:72[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/15000
专题理论物理所SCI论文
通讯作者Kang, ZF (reprint author), Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China.
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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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