Going beyond the minimal texture of quark mass matrices in the era of precision measurements

TL;DR

This paper analyzes complex quark mass matrices beyond minimal textures in light of recent precise measurements, finding that many previously viable configurations are now excluded, impacting future model development.

Contribution

It systematically evaluates all hermitian texture 5 zero quark mass matrices against current data, revealing their incompatibility and guiding model building.

Findings

All considered texture 5 zero matrices are excluded by data.

Refined quark mass and CKM measurements constrain theoretical models.

Implications for future quark mass matrix modeling are discussed.

Abstract

An attempt has been made to carry out a detailed analysis of quark mass matrices having structure beyond the minimal texture. In particular, keeping in mind, precision measurements of CKM parameters as well as refinements in the ranges of light quark masses, we have examined the viability of all possible combinations of hermitian texture 5 zero quark mass matrices. Interestingly, one finds that all these possibilities are now excluded by the present quark mixing data, thereby, having important implications for model building.