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arXiv 1208.1683hep-ph
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MSSM单线扩展中的增强的$h\rightarrow γγ$速率

Enhanced $h\rightarrow γγ$ rate in MSSM singlet extensions

Kai Schmidt-Hoberg, Florian Staub

摘要:

研究了超对称标准模型单重态扩展下Higgs衰变的双光子率。特别是,我们指出,轻charginos以及轻带电希格斯粒子可以显着贡献相应的部分衰变宽度,允许解释的实验指示whithin一个自然的超对称模型。这与在MSSM框架内提出的需要大量电弱微调的“光态假设”形成对比。

英文摘要:

We study the di-photon rate in Higgs decays within singlet extensions of the supersymmetric standard model. In particular we point out that light charginos as well as a light charged Higgs can significantly contribute to the corresponding partial decay width, allowing for an explanation of the experimental indication whithin a natural supersymmetric model. This is in contrast to the `light stau scenario' proposed within the framework of the MSSM which requires a large amount of electroweak fine tuning.

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