Permuted Charged Lepton Correction in the Framework of Dirac Seesaw

TL;DR

This paper introduces a Dirac neutrino mass model incorporating an extended symmetry group and explores how charged lepton permutation affects neutrino observables, with implications for flavor violation and dark matter.

Contribution

It proposes a novel Dirac neutrino mass model with extended symmetries and analyzes the effects of charged lepton permutation on neutrino phenomenology.

Findings

Impact of charged lepton permutation on neutrino mixing angles

Predictions for neutrino mass hierarchies and CP phase

Applications to charged lepton flavor violation and dark matter

Abstract

A Dirac neutrino mass model is proposed, based on an extended group structure of $SU(2)_L \otimes U(1)_Y \otimes A_4 \otimes Z_3 \otimes Z_{10}$ with the Type-I seesaw mechanism. This work explores the impact of parametrization and permutation in the charged lepton diagonalizing matrix, driven by free parameters in the charged lepton sector, on the predictions of observable parameters. Some interesting consequences on the neutrino mass hierarchies, mixing angles and the Dirac CP phase are observed. The framework also finds application in the study of charged lepton flavour violation and dark matter.