Singlet extension of the MSSM for 125 GeV Higgs mass with the least tuning

被引：19

作者：

Kyae, Bumseok ^{[1
]}

Park, Jong-Chul ^{[2
]}

机构：

[1] Pusan Natl Univ, Dept Phys, Pusan 609735, South Korea

[2] Korea Inst Adv Study, Seoul 130722, South Korea

来源：

PHYSICAL REVIEW D | 2013年 / 87卷 / 07期

基金：

新加坡国家研究基金会;

关键词：

DESTABILIZING DIVERGENCES; RADIATIVE-CORRECTIONS; MU-PROBLEM; SUPERSYMMETRY;

D O I：

10.1103/PhysRevD.87.075021

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In order to raise the Higgs mass to 125 GeV and relieve the fine-tuning associated with the heavy s-top mass in the minimal supersymmetric standard model, we propose a new singlet extension of the minimal supersymmetric standard model. In this scenario, the additional Higgs mass is radiatively generated in a hidden sector, and the effect is transmitted to the Higgs through a messenger field. The Higgs mass can be efficiently increased by the parameters of the superpotential as in the extra matter scenario, but free from the constraints on extra colored matter fields by the LHC experiments. As a result, the tuning problem can be remarkably mitigated by taking low enough messenger mass (similar to 300 GeV) and mass parameter scales (similar to 500 GeV). We also discuss how to enhance the diphoton decay rate of the Higgs over the SM expectation in this framework. DOI: 10.1103/PhysRevD.87.075021

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