基于S3味对称性的轻子质量谱和味混合模式模型

doi:10.7523/j.issn.2095-6134.2016.04.006

中国科学院大学学报 ›› 2016, Vol. 33 ›› Issue (4): 468-476.DOI: 10.7523/j.issn.2095-6134.2016.04.006

基于S₃味对称性的轻子质量谱和味混合模式模型

杨德山, 杨兴华

中国科学院大学物理科学学院, 北京 100049

收稿日期:2015-11-02 修回日期:2016-01-09 发布日期:2016-07-15
通讯作者: 杨德山

A model for lepton mass spectra and flavor mixing under S₃ flavor symmetry

YANG Deshan, YANG Xinghua

School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China

Received:2015-11-02 Revised:2016-01-09 Published:2016-07-15
Supported by:
Supported by the National Natural Science Foundation of China(11275263)

摘要/Abstract

摘要：

为解释轻子质量谱和中微子味混合模式，从味对称性出发，构造一个简单的基于S₃味对称性的type-Ⅱ跷跷板模型。在模型中，假设轻子质量矩阵具有S₃味对称性，并且该对称性可经由破缺链S₃→Z₂→Ø；显示破缺。计算得到与最新实验数据符合较好的中微子振荡混合角（θ₁₂，θ₂₃和θ₁₃）和最大的Dirac CP破坏相角δ≈270°。

关键词: 轻子质量谱, 轻子味混合, 味对称性, 跷跷板机制

Abstract:

We propose a simple model for the lepton mass spectra and flavor mixing by combining the S₃ flavor symmetry with type-II seesaw mechanism.To obtain the observed mass spectra and mixing patterns of lepton sector, the explicit flavor symmetry breaking chain S₃→Z₂→Ø is considered.It is shown that this ansatz can naturally allow the three neutrino mixing angles (i.e.,θ₁₂,θ₂₃, and θ₁₃) to be in good agreement with the current experiment data and the maximal Dirac CP-violating phase δ≈270° indicated by recent experiments.

Key words: lepton mass spectra, lepton flavor mixing, flavor symmetry, seesaw mechanism

中图分类号:

O143

杨德山, 杨兴华. 基于S₃味对称性的轻子质量谱和味混合模式模型[J]. 中国科学院大学学报, 2016, 33(4): 468-476.

YANG Deshan, YANG Xinghua. A model for lepton mass spectra and flavor mixing under S₃ flavor symmetry[J]. , 2016, 33(4): 468-476.

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基于S₃味对称性的轻子质量谱和味混合模式模型

A model for lepton mass spectra and flavor mixing under S₃ flavor symmetry

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