Neutrino masses and mixing in minimal inverse seesaw using A4 modular symmetry

Abstract

In this paper, we construct a model with the help of modular symmetry in the framework of minimal inverse seesaw [ISS(2,3)]. We have used [Formula: see text] modular group which is isomorphic to non-Abelian discrete symmetry group [Formula: see text]. In this group, there are three Yukawa modular forms of weight 2. In this model, we study neutrino masses and mixings for both normal and inverted hierarchies. Use of modular symmetry reduces the need for more number of extra flavons and their specific VEV alignments, as such, minimality of the model is maintained to a great extent. Along with [Formula: see text] symmetry group, we have used [Formula: see text] to restrict certain interaction terms in the Lagrangian. Further, we calculate the effective mass to address the phenomena of neutrinoless double-beta decay ([Formula: see text]). The values of effective mass are found to lie within the bound ([Formula: see text][Formula: see text]eV) as predicted by different [Formula: see text] experiments.