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Breaking of the tetra-maximal neutrino mixing pattern
Nuclear Physics B ( IF 2.8 ) Pub Date : 2020-04-21 , DOI: 10.1016/j.nuclphysb.2020.115011
Newton Nath

We make an attempt to study the present status of the tetra-maximal neutrino mixing (TMM) pattern. It predicts all the three leptonic mixing angles θ138.4,θ1230.4, and θ23=45 together with the three CP-violating phases δ=ρ=σ=90. However, the latest global analysis of neutrino oscillation data prefer relatively higher best-fit value of θ12 as well as non-maximal values of both θ23,δ. In order to explain the realistic data, we study the breaking of TMM pattern. We first examine the breaking of TMM due to renormalization group (RG) running effects and then study the impact of explicit breaking terms. We also examine the effect of RG-induced symmetry breaking on the effective Majorana neutrino mass in neutrinoless double beta decay experiments.



中文翻译:

打破四最大中微子混合模式

我们尝试研究四最大中微子混合(TMM)模式的当前状态。它可以预测所有三个轻子的混合角度θ138.4θ1230.4θ23=45 以及三个违反CP的阶段 -δ=ρ=σ=90。但是,最新的中微子振荡数据全局分析倾向于相对较高的最佳拟合值θ12 以及两者的非最大值 θ23δ。为了解释现实数据,我们研究了TMM模式的突破。我们首先检查由于重归一化组(RG)运行影响而引起的TMM的中断,然后研究显式中断项的影响。我们还检查了无中微子双β衰变实验中RG诱导的​​对称性破坏对有效马约拉纳中微子质量的影响。

更新日期:2020-04-21
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