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arXiv 2108.01101hep-ph
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轻子数自发破缺引起的可观测味破缺

Observable flavor violation from spontaneous lepton number breaking

Pablo Escribano, Martin Hirsch, Jacopo Nava, Avelino Vicente

摘要:

我们提出了一个简单的模型,自发轻子数违反潜在的大味违反衰变,包括majoron发射衰变,如$μ\to e \, J$,饱和的实验界限的可能性。在这个模型中,majoron是一种单重态-二重态混合物。它产生了中微子质量的I型跷跷板,也包含了一个矢量轻子。作为一个副产品,该模型可以解释异常的$(g-2)_μ$在其参数空间的一部分,在那里,人们预计,分支比的希格斯介子μ子是改变相对于标准模型的预期。然而,对μ子$g-2$异常的解释将导致与最近的天体物理学界对强子与μ子耦合的紧张关系。

英文摘要:

We propose a simple model of spontaneous lepton number violation with potentially large flavor violating decays, including the possibility that majoron emitting decays, such as $μ\to e \, J$, saturate the experimental bounds. In this model the majoron is a singlet-doublet admixture. It generates a type-I seesaw for neutrino masses and contains also a vector-like lepton. As a by-product, the model can explain the anomalous $(g-2)_μ$ in parts of its parameter space, where one expects that the branching ratio of the Higgs to muons is changed with respect to Standard Model expectations. However, the explanation of the muon $g-2$ anomaly would lead to tension with recent astrophysical bounds on the majoron coupling to muons.

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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