Hierarchy of Fermion Masses in the 5D Standing Wave Braneworld

TL;DR

This paper proposes a 5D standing wave braneworld model where the localization of fermion modes at wave nodes explains the observed mass spectrum of quark families.

Contribution

It introduces a novel mechanism linking standing wave nodes in extra dimensions to fermion mass hierarchies in a braneworld scenario.

Findings

Fermion generations correspond to three standing wave nodes in the bulk.

The model reproduces the observed mass spectrum of up and down quarks.

Localization peaks of fermion wavefunctions determine mass differences.

Abstract

The localization problem for massive fermions in the 5D standing wave braneworld is considered. The fermion generations on the brane are explained by the existence of three nodes of standing waves in the bulk, where the left and right modes of the 5D fermion are localized and Dirac-type couplings mixes them. We show that in this model the structure of peaks of the left and right fermion wavefunctions in extra dimension leads to the observed mass spectrum of the up and down quark families.