标题： 带有$A_4$-模对称性的逆 seesaw 模型 显示英文标题

标题： An Inverse Seesaw model with $A_4$-modular symmetry

摘要： 我们讨论一个基于右旋费米子特异的$U(1)$规范对称性和$A_4$-模对称性的逆 seesaw 模型。这些对称性禁止不必要的项，并限制与逆 seesaw 机制相关的 Yukawa 相互作用结构。然后，我们可以通过数值分析得到中微子领域的一些预测，如狄拉克-CP 相位和中微子质量之和。此外，由于模对称性的限制，也可以得到重伪狄拉克中微子质量之间的关系。我们还讨论了该模型对轻子味违反和对撞机物理的影响。 显示英文摘要

摘要： We discuss an inverse seesaw model based on right-handed fermion specific $U(1)$ gauge symmetry and $A_4$-modular symmetry. These symmetries forbid unnecessary terms and restrict structures of Yukawa interactions which are relevant to inverse seesaw mechanism. Then we can obtain some predictions in neutrino sector such as Dirac-CP phase and sum of neutrino mass, which are shown by our numerical analysis. Besides the relation among masses of heavy pseudo-Dirac neutrino can be obtained since it is also restricted by the modular symmetry. We also discuss implications to lepton flavor violation and collider physics in our model.