Yukawa Hierarchies from Split Fermions in Extra Dimensions

TL;DR

This paper proposes a higher-dimensional model where fermion components are displaced to naturally generate Yukawa hierarchies, successfully fitting observed quark and lepton masses and mixings, including a specific prediction for the strange quark mass.

Contribution

It introduces a unique configuration of fermion displacements in extra dimensions that reproduces all observed fermion masses and mixing angles.

Findings

Successfully fits all quark and lepton masses and mixings

Predicts the strange quark mass as 120 MeV

Provides a geometric explanation for Yukawa hierarchies

Abstract

We explore a mechanism for generating the Yukawa hierarchies by displacing the left- and right-handed components of the Standard Model fermions in a higher-dimensional space. We find a unique configuration of displacements which fits all quark and lepton masses and mixing angles, with a prediction for the strange quark mass m_s = 120 MeV.