Gauge bosons in a five-dimensional theory with localized gravity

TL;DR

This paper explores gauge bosons in a five-dimensional model with localized gravity, analyzing their mass spectrum, couplings, and potential phenomenological implications for the Standard Model.

Contribution

It introduces a novel analysis of gauge boson behavior in a five-dimensional localized gravity setup, highlighting differences from graviton localization.

Findings

Massless gauge mode is not localized in the extra dimension.

KK excitations have significant couplings to both boundaries.

Distinct behavior from graviton localization patterns.

Abstract

We consider the possibility of gauge bosons living in the recently proposed five-dimensional theory with localized gravity. We study the mass spectrum of the Kaluza-Klein (KK) excitations of the gauge fields and calculate their couplings to the boundaries of the fifth dimension. We find a different behaviour from the case of the graviton. In particular, we find that the massless mode is not localized in the extra dimension and that the KK excitations have sizeable couplings to the two boundaries. We also discuss possible phenomenological implications for the case of the standard model gauge bosons.