S_4 Flavored CP Symmetry for Neutrinos

TL;DR

This paper introduces an $S_4$ flavored CP symmetry in a gauge model with type II seesaw, predicting specific neutrino mixing angles and CP phases, advancing understanding of lepton flavor structure.

Contribution

It proposes a novel $S_4$ flavored CP symmetry framework integrated into a gauge model with type II seesaw, predicting distinctive neutrino mixing parameters.

Findings

Predicts maximal atmospheric mixing angle

Forecasts nonzero $ heta_{13}$

Determines maximal Dirac CP phase $ eq 0$

Abstract

A generalized CP symmetry for leptons is presented where CP transformations are part of an $S_4$ symmetry that connects different families. We study its implications for lepton mixings in a gauge model realization of the idea using type II seesaw for neutrino masses. The model predicts maximal atmospheric mixing, nonzero $\theta_{13}$ and maximal Dirac phase $\delta_{D}= \pm\pi/2$.