On fermion masses and mixing in a model with $A_4$ symmetry

TL;DR

This paper explores a multi-Higgs extension of the Standard Model with $A_4$ symmetry, analyzing fermion masses, mixing matrices, and flavor-changing neutral currents, demonstrating their suppression through scalar sector mixings and masses.

Contribution

It provides a detailed numerical analysis of neutral current mixing matrices and flavor-changing neutral currents within an $A_4$ symmetric multi-Higgs model.

Findings

Neutral current mixing matrices are numerically obtained.

Flavor-changing neutral currents are suppressed by scalar sector mixings and masses.

The model successfully accommodates fermion masses and mixing matrices.

Abstract

In a recently proposed multi-Higgs extension of the standard model in which discrete symmetries, $A_4$ and $Z_3$ are imposed we show that, after accommodating the fermion masses and the mixing matrices in the charged currents, the mixing matrices in the neutral currents induced by neutral scalars are numerically obtained. However, the flavor changing neutral currents are under control mainly by mixing and/or mass suppressions in the neutral scalar sector.