Minimal extension of tribimaximal mixing and generalized Z2 x Z2 symmetries

被引：102

作者：

Gupta, Shivani ^{[1
]}

Joshipura, Anjan S. ^{[1
]}

Patel, Ketan M. ^{[1
]}

机构：

[1] Phys Res Lab, Ahmadabad 380009, Gujarat, India

来源：

PHYSICAL REVIEW D | 2012年 / 85卷 / 03期

关键词：

DISCRETE FLAVOR SYMMETRIES; LARGE THETA(13); NEUTRINO; MATRIX;

D O I：

10.1103/PhysRevD.85.031903

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We discuss consequences of combining the effective Z(2) x Z(2) symmetry of the tribimaximal neutrino mass matrix with the CP symmetry. Imposition of such generalized Z(2) x Z(2) symmetries leads to predictive neutrino mass matrices determined in terms of only four parameters and leads to a nonzero theta(13) and maximal atmospheric mixing angle and CP violating phase. It is shown that an effective generalized Z(2) x Z(2) symmetry of the mass matrix can arise from the A(4) symmetry with specific vacuum alignment. The neutrino mass matrix in the considered model has only three real parameters and leads to determination of the absolute neutrino mass scale as a function of the reactor angle theta(13).

引用

页数：6

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