On naturalness of the MSSM and NMSSM
文献类型：期刊论文
| 作者 | Li, TJ
|
| 刊名 | JOURNAL OF HIGH ENERGY PHYSICS
 |
| 出版日期 | 2012 |
| 期号 | 11页码:24 |
| 关键词 | SUPERSYMMETRIC STANDARD MODEL PHOTON HIGGS SIGNAL DARK-MATTER BOSON MASS CONSTRAINTS BREAKING SEARCHES SECTOR LHC |
| ISSN号 | 1126-6708 |
| 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 | 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. |
| 学科主题 | Physics |
| 收录类别 | SCI |
| 原文出处 | http://dx.doi.org/10.1007/JHEP11(2012)024 |
| 语种 | 英语 |
| WOS记录号 | WOS:000312197800024 |
| 公开日期 | 2014-04-25 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/15000]  |
| 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. On naturalness of the MSSM and NMSSM[J]. JOURNAL OF HIGH ENERGY PHYSICS,2012(11):24. |
| APA | Li, TJ.(2012).On naturalness of the MSSM and NMSSM.JOURNAL OF HIGH ENERGY PHYSICS(11),24. |
| MLA | Li, TJ."On naturalness of the MSSM and NMSSM".JOURNAL OF HIGH ENERGY PHYSICS .11(2012):24. |
入库方式： OAI收割
来源：理论物理研究所
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