An S4 model for quarks and leptons with maximal atmospheric angle

TL;DR

This paper presents an S4 flavor symmetry model for quarks and leptons, predicting maximal atmospheric neutrino mixing and a specific quark mass texture, aligning with observed mass hierarchies and mixing angles.

Contribution

It introduces a novel S4-based framework with six Higgs doublets, deriving neutrino and quark mixing patterns consistent with experimental data.

Findings

Predicts zero reactor angle and maximal atmospheric angle in neutrinos

Establishes a four-zero texture for quark mass matrices

Provides a fit for quark mass hierarchies and mixing angles

Abstract

We consider a model for quark and lepton masses and mixings based on S4 flavor symmetry. The model contains six Higgs doublets where three of them give mass to the leptons and the other three gives mass to the quarks. Charged fermion and quark masses arise from renormalizable interactions while neutrino Majorana masses are generated through effective dimension five Weinberg operator. From the study of the minimization of the scalar potential we found a residual mu-tau symmetry in the neutrino sector predicting zero reactor angle and maximal atmospheric angle and for the quark sector we found a four-zero texture. We give a fit of the mass hierarchies and mixing angles in the quark sector.