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题名: The Z plus photon and diphoton decays of the Higgs boson as a joint probe of low energy SUSY models
作者: Cao, JJ ;  Wu, L ;  Wu, PW ;  Yang, JM
刊名: JOURNAL OF HIGH ENERGY PHYSICS
出版日期: 2013
期号: 9
关键词: SUPERSYMMETRIC STANDARD MODEL ;  LOCAL SUPERSYMMETRY ;  DARK-MATTER ;  GAMMA-GAMMA ;  MSSM ;  MASSES ;  NMSSM ;  LHC ;  COUPLINGS ;  EXTENSION
学科分类: Physics
通讯作者: Cao, JJ (reprint author), Henan Normal Univ, Dept Phys, Xinxiang 453007, Peoples R China.
部门归属: [Cao, Junjie] Henan Normal Univ, Dept Phys, Xinxiang 453007, Peoples R China; [Cao, Junjie] Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China; [Wu, Lei; Wu, Peiwen; Yang, Jin Min] Acad Sinica, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China
英文摘要: In light of recent remarkable progress in Higgs search at the LHC, we study the rare decay process h -> Z gamma and show its correlation with the decay h -> gamma gamma in low energy SUSY models such as CMSSM, MSSM, NMSSM and nMSSM. Under various experimental constraints, we scan the parameter space of each model, and present in the allowed parameter space the SUSY predictions on the Z gamma and gamma gamma signal rates in the Higgs production at the LHC and future e(+) e(-) linear colliders. We have following observations: (i) Compared with the SM prediction, the Z gamma and gamma gamma signal rates in the CMSSM are both slightly suppressed; (ii) In the MSSM, both the Z gamma and gamma gamma rates can be either enhanced or suppressed, and in optimal case, the enhancement factors at the LHC can reach 1.1 and 2 respectively; (iii) In the NMSSM, the Z gamma and gamma gamma signal rates normalized by their SM predictions are strongly correlated, and at the LHC the rates vary from 0.2 to 2; (iv) In the nMSSM, the Z gamma and gamma gamma rates are both greatly reduced. Since the correlation behavior between the Z gamma signal and the gamma gamma signal is so model-dependent, it may be used to distinguish the models in future experiments.
资助者: National Natural Science Foundation of China (NNSFC) [10775039, 11075045, 11275245, 10821504, 11135003]; Project of Knowledge Innovation Program (PKIP) of Chinese Academy of Sciences [KJCX2.YW.W10]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000325227500011
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15281
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Recommended Citation:
Cao, JJ,Wu, L,Wu, PW,et al. The Z plus photon and diphoton decays of the Higgs boson as a joint probe of low energy SUSY models[J]. JOURNAL OF HIGH ENERGY PHYSICS,2013(9).
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