Radiative generation of realistic mixing in neutrino sector is studied at one-loop level in a scotogenic $A4\times Z_2$ symmetric framework. A scheme of obtaining non-zero ${\theta }_{13}$ through small mass splitting in right-handed neutrino sector is proposed. The model consists of three right-handed neutrinos, two of which were required to be degenerate in masses to yield the common structure of the left-handed neutrino mass matrix that corresponds to ${\theta }_{13}=0$, ${\theta }_{23}=\pi /4$ and any ${\theta }_{12}^0$ in particular the choices specific to the Tribimaximal (TBM), Bimaximal (BM) and Golden Ratio (GR) mixings. Non-zero ${\theta }_{13}$, deviations of ${\theta }_{23}$ from maximality and small corrections to the solar mixing angle ${\theta }_{12}$ can be generated in one stroke by shifting from this degeneracy in the right-handed neutrino sector by a small amount. The lightest among the three $Z_2$ odd inert $SU{(2)}_L$ doublet scalars present in the model can be a potential dark matter candidate.

在单向性研究中，研究了中微子扇区中实际混合的辐射产生 $\mathrm{一种}4\times {ž}_2$对称框架。一种获取非零的方案${\theta }_{13}$建议通过右旋中微子区的小质量分裂。该模型由三个右手中微子组成，其中两个需要进行质量退化，以产生对应于左手中微子质量矩阵的公共结构${\theta }_{13}=0$， ${\theta }_{23}=\pi /4$ 和任何 ${\theta }_{12}^0$特别是Tribimaximal（TBM），Bimaximal（BM）和Golden Ratio（GR）混合的特定选择。非零${\theta }_{13}$，偏差为 ${\theta }_{23}$ 从最大和较小的校正到太阳混合角 ${\theta }_{12}$通过从右手中微子扇形的这种简并性偏移少量移出，可以在一冲程中生成。三者中最轻的${ž}_2$ 惰性 $\mathrm{小号}ü{（2）}_{\mathrm{大号}}$ 模型中存在的双峰标量可能是潜在的暗物质候选对象。