We construct a multiscalar and nonrenormalizable $B-L$ extension of the standard model with $A_4$ group which successfully explains the recent observed neutrino oscillation pattern. The tiny neutrino masses and their orderings are reproduced via the type-I seesaw mechanism. The model predicts co-bimaximal neutrino mixing, i.e., ${\theta }_{23}=\frac{\pi }{4}$, ${\delta }_{CP}=-\frac{\pi }{2}$ while ${\theta }_{13}={8.57}^{\circ }$ for normal hierarchy and ${\theta }_{13}={8.60}^{\circ }$ for inverted hierarchy. The effective neutrino masses are predicted to be $〈m_{ee}〉=10.0\text{meV}$ for NH and $〈m_{ee}〉=48.40\text{meV}$ for IH being in good agreement with the most recent experimental data. The obtained results are also in agreement with the recent experimental data on the SM quark masses, mixing angles and CP violation in the quark sector.

我们构造了一个多标量且不可重整的 $乙-\mathrm{大号}$ 标准模型的扩展 ${\mathrm{一种}}_4$该小组成功地解释了最近观察到的中微子振荡模式。微小的中微子质量及其有序性是通过I型跷跷板机制复制的。该模型预测了共双最大中微子混合，即${\theta }_{23}=\frac{\pi }{4}$， ${\delta }_{CP}=-\frac{\pi }{\mathrm{2个}}$ 尽管 ${\theta }_{13}={8.57}^{\circ }$ 对于正常的层次结构和 ${\theta }_{13}={8.60}^{\circ }$用于倒置的层次结构。有效的中微子质量预计为$〈{米}_{ËË}〉=10.0\text{病毒}$ 对于NH和 $〈{米}_{ËË}〉=48.40\text{病毒}$因为IH与最新的实验数据非常吻合。所得结果也与最近关于夸克区SM夸克质量，混合角和CP违规的实验数据一致。