Pair production of a 125 GeV Higgs boson in MSSM and NMSSM at the LHC

被引：84

作者：

Cao, Junjie ^{[1
,2
]}

Heng, Zhaoxia ^{[1
]}

Shang, Liangliang ^{[1
]}

Wan, Peihua ^{[1
]}

Yang, Jin Min ^{[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, State Key Lab Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2013年 / 04期

基金：

中国国家自然科学基金;

关键词：

Supersymmetry Phenomenology; STANDARD-MODEL; SUPERSYMMETRY; CONSTRAINTS; DECAY;

D O I：

10.1007/JHEP04(2013)134

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 light of the recent LHC Higgs search data, we investigate the pair production of a SM-like Higgs boson around 125 GeV in the MSSM and NMSSM. We first scan the parameter space of each model by considering various experimental constraints, and then calculate the Higgs pair production rate in the allowed parameter space. We find that in most cases the dominant contribution to the Higgs pair production comes from the gluon fusion process and the production rate can be greatly enhanced, maximally 10 times larger than the SM prediction (even for a TeV-scale stop the production rate can still be enhanced by a factor of 1.3). We also calculate the chi(2) value with the current Higgs data and find that in the most favored parameter region the production rate is enhanced by a factor of 1.45 in the MSSM, while in the NMSSM the production rate can be enhanced or suppressed (sigma(SUSY)/sigma(SM) varies from 0.7 to 2.4).

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