| 基于S3味对称性的轻子质量谱和味混合模式模型 |
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| 作者姓名： | 杨德山 杨兴华 |
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| 作者单位： | 中国科学院大学物理科学学院, 北京 100049 |
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| 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°。
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| 关 键 词： | 轻子质量谱 轻子味混合 味对称性 跷跷板机制 |
| 收稿时间： | 2015-11-02 |
| 修稿时间： | 2016-01-09 |
A model for lepton mass spectra and flavor mixing under S3 flavor symmetry |
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| Authors: | YANG Deshan YANG Xinghua |
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| Institution: | School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China |
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| 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. |
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| Keywords: | lepton mass spectra lepton flavor mixing flavor symmetry seesaw mechanism |
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