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arXiv 2204.05024hep-ph
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μ子$g-2$和$W$玻色子质量的类矢量轻子模型

A Model of Vector-like Leptons for the Muon $g-2$ and the $W$ Boson Mass

Hyun Min Lee, Kimiko Yamashita

摘要:

我们考虑一个简单的扩展标准模型(SM)与矢量轻子和本地$U(1)'$对称性,最近的实验异常的μ子$g-2$和$W$玻色子质量的动机。$U(1)'$对称性被暗希格斯标量和第二个希格斯偶线的VEV自发破缺,导致μ子和类矢量轻子之间的混合。结果表明,我们同时得到了对μ子$g-2$和$W$玻色子质量的修正,主要是由于类矢量轻子和第二Higgs双重态的$Z'$规范相互作用。我们还讨论了该模型与$Z$玻色子衰变宽度、Higgs耦合和双轻子束缚的一致性。

英文摘要:

We consider a simple extension of the Standard Model (SM) with a vector-like lepton and a local $U(1)'$ symmetry, motivated by the recent experimental anomalies in the muon $g-2$ and the $W$ boson mass. The $U(1)'$ symmetry is spontaneously broken by the VEVs of the dark Higgs scalar and the second Higgs doublet, giving rise to the mixing between the muon and the vector-like lepton. As a result, we obtain the desirable corrections to the muon $g-2$ and the $W$ boson mass simultaneously, dominantly due to the $Z'$ gauge interactions for the vector-like lepton and the second Higgs doublet, respectively. We also discuss the consistency of the model with the $Z$ boson decay width, the Higgs couplings and the dilepton bounds.

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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