On the gauge boson's properties in a candidate technicolor theory

TL;DR

This study investigates the properties of technigluons in a candidate technicolor theory using lattice gauge theory, revealing behaviors similar to QCD at finite mass and potential conformal features at the massless limit.

Contribution

It provides the first detailed lattice analysis of technigluon correlation functions in a two-technicolor model, exploring the transition towards the massless limit.

Findings

Technigluon correlators resemble QCD at finite techniquark mass.

Potential signs of (quasi-)conformal behavior at the massless limit.

Systematic uncertainties are significant but do not obscure main trends.

Abstract

The technicolor scenario replaces the Higgs sector of the standard model with a strongly interacting sector. One candidate for a realization of such a sector is two-technicolor Yang-Mills theory coupled to two degenerate flavors of adjoint, massless techniquarks. Using lattice gauge theory the properties of the technigluons in this scenario are investigated as a function of the techniquark mass towards the massless limit. For that purpose the minimal Landau gauge two-point and three-point correlation functions are determined, including a detailed systematic error analysis. The results are, within the relatively large systematic uncertainties, compatible with a behavior very similar to QCD at finite techniquark mass. However, the limit of massless techniquarks exhibits features which could be compatible with a (quasi-)conformal behavior.