Investigating vector boson scattering: A fully gauge-invariant study

TL;DR

This paper presents a fully gauge-invariant analysis of vector boson scattering involving different Higgs-like particles, combining perturbative and non-perturbative lattice methods to improve the reliability of predictions in collider physics.

Contribution

It introduces a novel gauge-invariant approach to VBS analysis that integrates perturbative and lattice simulations across various Higgs mass scenarios.

Findings

Consistent results between perturbative and lattice methods.

Insights into VBS behavior across different Higgs mass regimes.

Enhanced understanding of gauge invariance in VBS predictions.

Abstract

Vector boson scattering (VBS) plays a central role in the search for new physics at collider experiments such as ATLAS and CMS at the LHC. Usually predictions for this kind of process are obtained using mainly perturbative approaches in fixed gauges. Here we present a fully gauge-invariant study of VBS in the scalar-channel involving three different types of Higgs-like particles characterized by their mass; above (heavy), inside (resonance) or below (stable) the elastic region. To this end, we combine results obtained in a reduced SM setup from (augmented) perturbation theory with those from non-perturbative lattice simulations.