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arXiv 1406.6965hep-ph
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Muon g-2,125 GeV Higgs和sMSSM中的中性子暗物质

Muon g-2, 125 GeV Higgs and Neutralino Dark Matter in sMSSM

K. S. Babu, Ilia Gogoladze, Qaisar Shafi, Cem Salih Un

摘要:

我们讨论的sparticle(和希格斯)光谱在一类基于风味的最小超对称标准模型,这里称为sMSSM。在这个框架中,超对称破缺拉格朗日量采取了与大统一对称(如SO(10))和作用于具有2+1或3族分配的三个族的非阿贝尔味对称相一致的最一般形式。基于规范SU(2)和SO(3)味对称性,以及非阿贝尔离散对称性如S_3和A_4的模型都属于这一类。这些模型用七个唯象参数描述了超对称破缺。在sMSSM中,前两族的所有sfermions在M_GUT处的软超对称破缺质量相等,而与相应的第三族质量不同。在这样一个框架中,我们表明,μ子g-2异常,观察到的希格斯玻色子质量为125 GeV,和观察到的遗迹中性伴子暗物质丰度可以同时容纳。特别是μ子g-2异常的分辨率产生的结果是,前两代夸克质量,以及胶子质量,应该<~ 2 TeV,这将在LHC 14进行测试。

英文摘要:

We discuss the sparticle (and Higgs) spectrum in a class of flavor symmetry-based minimal supersymmetric standard models, referred to here as sMSSM. In this framework the SUSY breaking Lagrangian takes the most general form consistent with a grand unified symmetry such as SO(10) and a non-Abelian flavor symmetry acting on the three families with either a 2+1 or a 3 family assignment. Models based on gauged SU(2) and SO(3) flavor symmetry, as well as non-Abelian discrete symmetries such as S_3 and A_4, have been suggested which fall into this category. These models describe supersymmetry breaking in terms of seven phenomenological parameters. The soft supersymmetry breaking masses at M_GUT of all sfermions of the first two families are equal in sMSSM, which differ in general from the corresponding third family mass. In such a framework we show that the muon g-2 anomaly, the observed Higgs boson mass of ~ 125 GeV, and the observed relic neutralino dark matter abundance can be simultaneously accommodated. The resolution of the muon g-2 anomaly in particular yields the result that the first two generation squark masses, as well the gluino mass, should be <~ 2 TeV, which will be tested at LHC14.

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