论文标题
非零$θ_{13} $，CP-VIORATION和中微子双β衰减，用于中微子混合在$ a_4 \ times z_2 \ times z_2 \ times z_3 $ tage Symementry模型
Non-zero $θ_{13}$, CP-violation and Neutrinoless Double Beta Decay for Neutrino Mixing in the $A_4\times Z_2\times Z_3$ Flavor Symmetry Model
论文作者
论文摘要
我们通过添加三个Singlet Flavons $ξ'$，$ξ''$和$ρ$来研究Altarelli-Feruglio $ a_4 $ a _4 $ a _4 $风味对称模型的修改，并通过额外的$ z_2 \ times z_2^ \ prime $ prime $ prime $ prime $ prime来增强该型号，以防止我们的研究中的意外情况。以两个扰动参数$ε$和$ε^\ prime $的形式增加了这三种黄体的添加。这些校正通过产生非零$θ_{13} $和其他与最新实验数据一致的中微子振荡参数来产生与精确的三型二临界（TBM）中微子混合模式的偏差。在这两个校正中，中微子肿块都是通过温伯格操作员生成的。对扰动参数$ε$和$ε^\ prime $的分析表明，以$ε$为$ε$的普通层次结构（NH）和倒立层次结构（IH）并没有太大变化。但是，随着$ε^\ prime $的值增加，$θ_{23} $在NH情况下占据了下部八分位。我们进一步研究了中微子质量的正常和反向层次结构的模型的参数空间中性β衰变Parmeter $ M_ {ββ} $。
We study the modification of the Altarelli-Feruglio $A_4$ flavor symmetry model by adding three singlet flavons $ξ'$, $ξ''$ and $ρ$ and the model is augmented with extra $Z_2\times Z_2^ \prime$ symmetry to prevent the unwanted terms in our study. The addition of these three flavons lead to two higher order corrections in the form of two perturbation parameters $ε$ and $ε^\prime$. These corrections yield the deviation from exact tri-bimaximal (TBM) neutrino mixing pattern by producing a non-zero $θ_{13}$ and other neutrino oscillation parameters which are consistent with the latest experimental data. In both the corrections, the neutrino masses are generated via Weinberg operator. The analysis of the perturbation parameters $ε$ and $ε^\prime$, shows that normal hierarchy (NH) and inverted hierarchy (IH) for $ε$ does not change much. However, as the values of $ε^\prime$ increases, $θ_{23}$ occupies the lower octant for NH case. We further investigate the neutrinoless double beta decay parmeter $m_{ββ}$ using the parameter space of the model for both normal and inverted hierarchies of neutrino masses.
