Vacuum Alignment of the Top-Mode Pseudo-Nambu-Goldstone Boson Higgs Model

TL;DR

This paper investigates the vacuum structure of the top-mode pseudo-Nambu-Goldstone boson Higgs model, demonstrating how it achieves electroweak symmetry breaking consistent with the observed Higgs mass, and explores related particle phenomenologies.

Contribution

It provides a detailed analysis of the vacuum alignment in the TMpNGBH model and studies the phenomenology of key predicted particles, advancing understanding of this Higgs model variant.

Findings

Vacuum aligns to produce electroweak symmetry breaking at the correct scale.

The model predicts a CP-odd Higgs partner and a vectorlike top partner.

The effective potential analysis confirms the model's consistency with observed Higgs properties.

Abstract

We study the vacuum alignment of the top-mode pseudo-Nambu-Goldstone boson Higgs (TMpNGBH) model, which has recently been proposed as a variant of the top quark condensate model in light of the 126 GeV Higgs boson discovered at the LHC. It is shown that the vacuum of the model, determined from the one-loop effective potential with all the explicit breaking effects included, realizes the electroweak symmetry breaking with the appropriate breaking scale. Phenomenologies of two characteristic particles in the TMpNGBH model, namely the CP-odd partner of the Higgs and the vectorlike partner of the top quark are also studied based on the newly identified vacuum.