A non-renormalizable neutrino mass model with S3 ? Z2 symmetry

The lepton sector is studied within a flavored non-renormalizable model where the S3 ??? Z2 flavor symmetry controls the masses and mixings. In this work, the effective neutrino as well as the charged lepton mass matrices are hierarchical and these have (under a benchmark in the charged sector) a kind of Fritzsch textures that accommodate the mixing angles in good agreement with the last experimental data. The model favors the normal hierarchy, this also predicts consistent values for the CP-violating phase and the |mee| effective Majorana neutrino mass rate. Along with this, the branching ratio for the lepton flavor violation process, ?? ??? e??, is below the current bound.

Automated summary

This study investigates the lepton sector within a flavored non-renormalizable model, where flavor symmetry controls the masses and mixings. The hierarchical mass matrices in this model are consistent with experimental data. The model favors the normal hierarchy and predicts values for other important parameters.