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arXiv 2009.00865hep-phhep-th
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中微子质量模型中带电轻子味破坏衰变的$A_4$对称性特征

Signatures of $A_4$ symmetry in the charged lepton flavour violating decays in a neutrino mass model

Rambabu Korrapati, Jai More, Ushak Rahaman, S. Uma Sankar

摘要:

研究了具有$A_4$离散对称性的中微子质量模型中的带电轻子味破坏。这种对称性要求在模型中存在多个希格斯二重态,并且它还决定了模型中附加中性标量的汤川耦合的味道。这种耦合导致了中性介子、顶夸克和$τ$轻子在树水平上衰变为不同味道的带电轻子。模型的$A_4$对称性导致了这些衰变的某些特征。我们讨论这些签名和预测率最有利的收费轻子味违反模式。

英文摘要:

We study the charged lepton flavour violation in a popular neutrino mass model with $A_4$ discrete symmetry. This symmetry requires the presence of multiple Higgs doublets in the model and it also dictates the flavour violating Yukawa couplings of the additional neutral scalars of the model. Such couplings lead to the decays of the neutral mesons, the top quark and the $τ$ lepton into charged leptons of different flavours at tree level. The $A_4$ symmetry of the model leads to certain characteristic signatures in these decays. We discuss these signatures and predict the rates for the most favourable charged lepton flavour violating modes.

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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