Phenomenological Implications of $\boldsymbol{\Delta(54)}$ Flavor Symmetry with Triple Inverse Seesaw

Abstract

We present an extension of the $\Delta(54)$ flavor symmetry model by incorporating two Standard Model Higgs fields. We generated the neutrino mass matrices with the Triple Inverse Seesaw mechanism. Our numerical analysis reveals deviations from tribimaximal neutrino mixing resulting in a nonzero reactor angle ($\theta_{13}$). The atmospheric oscillation parameter ($\theta_{23}$) occupies the upper octant. The model predicts Normal Hierarchy (NH) for neutrino masses. The best-fit value is obtained with minimum $\chi^2$ analysis. The prediction of the modified model on CP-violating parameters, effective Majorana mass, and Neutrinoless double beta decay phenomenological investigations are found to be in congruous with the current neutrino oscillation data.