arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1501.07428hep-ph
收藏

$A_4$对称模型中轻子CP位相的预测

Prediction of Leptonic CP Phase in $A_4$ symmetric model

Sin Kyu Kang, Morimitsu Tanimoto

摘要:

我们考虑了对三重极大混合矩阵的最小修改,该混合矩阵适应非零混合角$θ_{13}$和CP破坏。通过适当地引入对称破缺项,我们得到了四种可能的形式,用于对具有$A_4$味对称性的模型中的TBM混合进行最小修改。我们展示了如何可能的值的狄拉克型CP相位$δ_D$可以预测关于两个中微子混合角的中微子混合矩阵的标准参数化。根据最近更新的中微子混合角实验结果进行了数值分析,我们预测了所有可能情况下的CP相位值。我们还将我们对CP阶段的预测与更新的拟合进行了比较。

英文摘要:

We consider minimal modifications to tribimaximal (TBM) mixing matrix which accommodate non-zero mixing angle $θ_{13}$ and CP violation. We derive four possible forms for the minimal modifications to TBM mixing in a model with $A_4$ flavor symmetry by incorporating symmetry breaking terms appropriately. We show how possible values of the Dirac-type CP phase $δ_D$ can be predicted with regards to two neutrino mixing angles in the standard parametrization of the neutrino mixing matrix. Carrying out numerical analysis based on the recent updated experimental results for neutrino mixing angles, we predict the values of the CP phase for all possible cases. We also confront our predictions of the CP phase with the updated fit.

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。

↑