# The breaking of flavor democracy in the quark sector

## TL;DR

This paper investigates how breaking flavor democracy in quark mass matrices explains observed quark masses and mixing, proposing a novel parametrization and analyzing phenomenological implications across energy scales.

## Contribution

It introduces a new method to quantify flavor democracy breaking and explores its effects on quark mass hierarchies and mixing patterns.

## Key findings

- Flavor democracy breaking can account for quark mass spectrum
- The proposed parametrization reveals parallelism between quark sectors
- Implications for quark mass evolution from electroweak to high energies

## Abstract

The democracy of quark flavors is a well-motivated flavor symmetry, but it must be properly broken in order to explain the observed quark mass spectrum and flavor mixing pattern. We reconstruct the texture of flavor democracy breaking and evaluate its strength in a novel way, by assuming a parallelism between the Q=+2/3 and Q=-1/3 quark sectors and using a nontrivial parametrization of the flavor mixing matrix. Some phenomenological implications of such democratic quark mass matrices, including their variations in the hierarchy basis and their evolution from the electroweak scale to a superhigh-energy scale, are also discussed.