Refining thick brane models via electroweak data

TL;DR

This paper investigates how the properties of gauge and Higgs fields localized on a thick brane influence Standard Model parameters, enabling refinement of braneworld models through electroweak data and extra-dimensional effects.

Contribution

It introduces a dimensional reduction procedure that links extra-dimensional geometry to Standard Model parameters, refining thick brane models using electroweak data.

Findings

Parameters depend on extra dimension and warp factor

Observable parameters can constrain brane thickness

Refinement of braneworld models based on electroweak data

Abstract

After discussing the localization of Abelian and non-Abelian gauge fields and Higgs fields on a thick brane, we introduce a procedure of dimensional reduction and its consequences to the rescaled parameters of the boson sector of the Standard Model. The parameters encodes some power dependence on the extra dimension, usually narrow, warp factor and hence it also depend on the position related with the extra dimension inside the thick brane. In this vein, the observable parameters may be used to refine the braneworld models via the brane thickness.