论文标题
评论“带有$ a_4 $对称性的风味瘦素发生和中微子质量” [JHEP12（2021）051，ARXIV：2106.06773]
Comment on "Flavored leptogenesis and neutrino mass with $A_4$ symmetry" [JHEP12(2021)051, arXiv:2106.06773]
论文作者
论文摘要
最近，在参考文献中。 \ cite {a4datta} datta等。 [arxiv：2106.06773]提出了一个$ a_4 $风味对称模型，该模型补充了$ z_2 \ times z_3 $ symmetry，可以通过I型seesaw机制容纳适当的Lepton混合和中性群体。他们构建了一个最小的模型，只有一个$ su（2）_l $ doublet标量和六种产生特定风味结构的黄体，偏爱光中微子的正常层次结构，并缩小了违反Dirac CP的范围。但是，在所有对称性下，所有不变条款的贡献在模型构建过程中非常重要，但是在参考文献中。 \ cite {a4datta}作者错过了一个主要的质量术语，该术语有助于并改变了右手中微子的Majorana质量矩阵的结构。在本评论文件中，我们指出了上述问题，并提供了解决参考文献中缺失术语的解决方案。 \ cite {a4datta}。
Recently, in ref. \cite{A4Datta} Datta et al. [arXiv:2106.06773] proposed an $A_4$ flavor symmetric model supplemented by $Z_2\times Z_3$ symmetry which can accommodate the appropriate lepton mixing and neutrino masses via Type-I seesaw mechanism. They have constructed a minimal model with only one $SU(2)_L$ doublet scalar and six flavons that generate a specific flavor structure, favors the normal hierarchy of light neutrinos and narrows down the range of Dirac CP violating phase. Taking into account the contribution of all invariant terms, under all symmetries, is very important in the model building process, however, in ref. \cite{A4Datta} the authors miss a Majorana mass term which contributes to and changes the structure of the Majorana mass matrix of the right handed neutrinos. In this comment paper, we point out the above issue and provide a solution to fill in the missing term in ref. \cite{A4Datta}.
