Prediction of leptonic CP phase in A4 symmetric model

被引:22
|
作者
Kang, Sin Kyu [1 ]
Tanimoto, Morimitsu [2 ]
机构
[1] Seoul Tech, Sch Liberal Arts, Inst Convergence Fundamental Study, Seoul 139743, South Korea
[2] Niigata Univ, Dept Phys, Niigata 9502181, Japan
来源
PHYSICAL REVIEW D | 2015年 / 91卷 / 07期
关键词
MU-TAU SYMMETRY; VIOLATION; LEPTOGENESIS; THETA(13);
D O I
10.1103/PhysRevD.91.073010
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We consider minimal modifications to the tribimaximal (TBM) mixing matrix which accommodate nonzero mixing angle theta(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 delta(D) can be predicted with regards to two neutrino mixing angles in the standard parametrization of the neutrino mixing matrix. Carrying out a 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 for the CP phase with the updated fit.
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页数:8
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