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arXiv 1208.6263hep-ph
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天然SUSY中的风味光阻

A Light Stop with Flavor in Natural SUSY

Roberto Auzzi, Amit Giveon, Sven Bjarke Gudnason, Tomer Shacham

摘要:

在125 GeV附近发现的类SM希格斯玻色子和标准模型的味道纹理激发了对超对称类颤动BSM扩展的研究。我们研究这样一个最小类的模型,自然处理SM参数的性质。考虑到实验界限以及来自风味物理学和电-弱精度数据的约束,我们发现如下。在一个自包含的极小模型中--包括希格斯扇区的完整动力学--低于TeV的顶部正方形处于b->sγ约束的张力中。放松关于重希格斯玻色子质量产生的假设,我们发现,在离半TeV不远的地方停止是允许的。这些模型具有一些独特的性质,例如h-> b \bar{b}的增强,τ \bar{τ}相对于h->γγ衰变,一个比终止重3倍的胶子,前两代的方子和终止之间的倒置等级约为3-20,相对较轻的希格斯诺中性伴子或stau NLSP,以及重的希格斯粒子和一个可能在LHC范围内的W'。

英文摘要:

The discovery of a SM-like Higgs boson near 125 GeV and the flavor texture of the Standard Model motivate the investigation of supersymmetric quiver-like BSM extensions. We study the properties of such a minimal class of models which deals naturally with the SM parameters. Considering experimental bounds as well as constraints from flavor physics and Electro-Weak Precision Data, we find the following. In a self-contained minimal model - including the full dynamics of the Higgs sector - top squarks below a TeV are in tension with b->sγ constraints. Relaxing the assumption concerning the mass generation of the heavy Higgses, we find that a stop not far from half a TeV is allowed. The models have some unique properties, e.g. an enhancement of the h-> b\bar{b},τ\bar{τ} decays relative to the h->γγ one, a gluino about 3 times heavier than the stop, an inverted hierarchy of about 3-20 between the squarks of the first two generations and the stop, relatively light Higgsino neutralino or stau NLSP, as well as heavy Higgses and a W' which may be within reach of the LHC.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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