Fermion Mass and Mixing in a Low-Scale Seesaw Model based on the S4 Flavor Symmetry

TL;DR

This paper develops a low-scale seesaw model with $S_4$ flavor symmetry and additional groups to explain fermion masses and mixings, successfully matching experimental data and predicting a specific leptonic CP phase.

Contribution

It introduces a novel low-scale seesaw model based on $S_4$ flavor symmetry with multiple supplementary groups, reproducing fermion masses and mixings consistent with current data.

Findings

Predicted leptonic CP phase of approximately 259.6 degrees

Model's neutrino mass predictions align with recent experimental constraints

Successfully reproduces quark and lepton flavor observables

Abstract

We construct a low-scale seesaw model to generate the masses of active neutrinos based on $S_4$ flavor symmetry supplemented by the $Z_2 \times Z_3 \times Z_4 \times Z_{14}\times U(1)_L$ group, capable of reproducing the low energy Standard model (SM) fermion flavor data. The masses of the SM fermions and the fermionic mixings parameters are generated from a Froggatt-Nielsen mechanism after the spontaneous breaking of the $S_4\times Z_2 \times Z_3 \times Z_4 \times Z_{14}\times U(1)_L$ group. The obtained values for the physical observables of the quark and lepton sectors are in good agreement with the most recent experimental data. The leptonic Dirac CP violating phase $\de _{CP}$ is predicted to be $259.579^\circ$ and the predictions for the absolute neutrino masses in the model can also saturate the recent constraints.