Higgs doublet as a Goldstone boson in perturbative extensions of the Standard Model

TL;DR

This paper explores models where the Higgs doublet acts as a pseudo-Goldstone boson within perturbative extensions of the Standard Model, aiming to address the hierarchy problem while remaining consistent with electroweak data.

Contribution

It proposes two realistic supersymmetric models with global SU(3) symmetry demonstrating different electroweak symmetry breaking mechanisms and experimental signatures.

Findings

Pseudo-Goldstone Higgs doublet models are viable in perturbative frameworks.

Two models exhibit distinct mechanisms for electroweak symmetry breaking.

Experimental signatures differ significantly between the models.

Abstract

We investigate the idea of the Higgs doublet as a pseudo-Goldstone boson in perturbative extensions of the Standard Model, motivated by the desire to ameliorate its hierarchy problem without conflict with the electroweak precision data. Two realistic supersymmetric models with global SU(3) symmetry are proposed, one for large and another for small values of tan\beta. The two models demonstrate two different mechanisms for EWSB and the Higgs mass generation. Their experimental signatures are quite different. Our constructions show that a pseudo-Goldstone Higgs doublet in perturbative extensions is just as plausible as in non-perturbative ones.