Neutrino mixing from CP symmetry

被引：44

作者：

Chen, Peng ^{[1
]}

Yao, Chang-Yuan ^{[1
]}

Ding, Gui-Jun ^{[1
]}

机构：

[1] Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Anhui, Peoples R China

来源：

PHYSICAL REVIEW D | 2015年 / 92卷 / 07期

基金：

中国国家自然科学基金;

关键词：

GENERALIZED CP; DELTA(6N(2)); PREDICTIONS; S-4;

D O I：

10.1103/PhysRevD.92.073002

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The neutrino mass matrix has remnant CP symmetry expressed in terms of the lepton mixing matrix, and vice versa the remnant CP transformations allow us to reconstruct the mixing matrix. We study the scenario that all four remnant CP transformations are preserved by the neutrino mass matrix. The most general parametrization of remnant CP transformations is presented. The lepton mixing matrix is completely fixed by the remnant CP, and its explicit form is derived. The necessary and sufficient condition for conserved Dirac CP violating phase is found. If the Klein four flavor symmetry generated by the postulated remnant CP transformations arises from a finite flavor symmetry group, the phenomenologically viable lepton flavor mixing would be the trimaximal pattern, both Dirac CP phase delta(CP) and Majorana phase alpha(31) are either 0 or pi while another Majorana phase alpha(21) is a rational multiple of pi. These general results are confirmed to be true in the case that the finite flavor symmetry group is Delta(6n(2)).

引用

页数：13

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