Quark mass hierarchies in D-brane realizations of the Standard Model

TL;DR

This paper explores how specific D-brane configurations in string theory can naturally produce the observed hierarchies of quark masses and mixings in the Standard Model, providing a potential string-theoretic explanation.

Contribution

It introduces a bottom-up D-brane setup that successfully generates realistic quark mass and mixing hierarchies within orientifold models.

Findings

A brane configuration that reproduces quark mass hierarchies

Demonstration of mixing patterns consistent with observations

Potential string theory realization of Standard Model features

Abstract

This proceeding is based on arXiv:0905.3044. We analyze the problem of the hierarchy of masses and mixings in orientifold realizations of the Standard Model. We present a bottom-up brane configuration that can generate such hierarchies.