Lepton Flavor Mixing and CP Symmetry
Lepton Flavor Mixing and CP Symmetry
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DOI：
10.1103/physrevd.91.033003
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发表时间：
2014-12
影响因子：
5
通讯作者：
Peng Chen;Cai-Chang Li;Gui-Jun Ding
中科院分区：
文献类型：
--
作者：
Peng Chen;Cai-Chang Li;Gui-Jun Ding
本文对剩余CP对称性限制轻子味混合的策略作了较一般的研究。中微子质量矩阵一般有四个剩余CP变换，它们可以从带电轻子对角基下的轻子混合矩阵导出。相反，轻子混合矩阵可以从假设的剩余CP变换重建。所有的混合角和CP破坏相位可以完全由剩余CP变换的全部或其中的三个确定。当保留一个或两个剩余CP变换时，所得到的轻子混合矩阵除了表征剩余CP的参数外，还分别依赖于三个真实的参数或一个真实的参数，并给出了混合矩阵的具体形式.对混合参数的唯象预测进行了讨论。研究了导致Dirac CP破坏消失或最大Dirac CP破坏的条件。
The strategy of constraining the lepton flavor mixing from remnant CP symmetry is investigated in a rather general way. The neutrino mass matrix generally admits four remnant CP transformations which can be derived from the measured lepton mixing matrix in the charged lepton diagonal basis. Conversely, the lepton mixing matrix can be reconstructed from the postulated remnant CP transformations. All mixing angles and CP violating phases can be completely determined by the full set of remnant CP transformations or three of them. When one or two remnant CP transformations are preserved, the resulting lepton mixing matrix would depend on three real parameters or one real parameter respectively in addition to the parameters characterizing the remnant CP, and the concrete form of the mixing matrix is presented. The phenomenological predictions for the mixing parameters are discussed. The conditions leading to vanishing or maximal Dirac CP violation are studied.