A light Higgs scalar in the NMSSM confronted with the latest LHC Higgs data

被引：85

作者：

Cao, Junjie ^{[1
,2
]}

Ding, Fangfang ^{[1
]}

Han, Chengcheng ^{[3
]}

Yang, Jin Min ^{[3
]}

Zhu, Jingya ^{[3
]}

机构：

[1] Henan Normal Univ, Dept Phys, Xinxiang 453007, Peoples R China

[2] Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China

[3] Acad Sinica, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2013年 / 11期

基金：

中国国家自然科学基金;

关键词：

Supersymmetry Phenomenology; DARK-MATTER; DISCOVERY; SECTOR; MSSM; MASS; CONSTRAINTS; MU(+)MU(-); LEP;

D O I：

10.1007/JHEP11(2013)018

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

In the Next-to-Minimal Supersymemtric Standard Model (NMSSM), one of the neutral Higgs scalars (CP-even or CP-odd) may be lighter than half of the SM-like Higgs boson. In this case, the SM-like Higgs boson h can decay into such a light scalar pair and consequently the gamma gamma and ZZ* signal rates at the LHC will be suppressed. In this work, we examine the constraints of the latest LHC Higgs data on such a possibility. We perform a comprehensive scan over the parameter space of the NMSSM by considering various experimental constraints and find that the LHC Higgs data can readily constrain the parameter space and the properties of the light scalar, e.g., at 3 sigma level this light scalar should be highly singlet dominant and the branching ratio of the SM-like Higgs boson decay into the scalar pair should be less than 30%. Also we investigate the detection of this scalar at various colliders. Through a detailed Monte Carlo simulation we find that under the constraints of the current Higgs data this light scalar can be accessible at the LHC-14 with an integrated luminosity over 300 fb(-1).

引用

页数：25

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