New Physics / Resonances in Vector Boson Scattering at the LHC

TL;DR

This paper discusses methods to interpret vector boson scattering at the LHC, addressing unitarity issues and introducing simplified models for potential new resonances, including tensor types.

Contribution

It presents a parameter-free unitarization approach and constructs simplified models for new resonances in vector boson scattering, focusing on tensor resonance complexities.

Findings

A unitarization prescription ensures physical predictions.

Simplified models for new resonances are developed.

Technical insights into tensor resonance modeling.

Abstract

Vector boson scattering is (together with the production of multiple electroweak gauge bosons) the key process in the current run 2 of LHC to probe the microscopic nature of electroweak symmetry breaking. Deviations from the Standard Model are generically parameterized by higher-dimensional operators, however, there is a subtle issue of perturbative unitarity for such approaches for the process above. We discuss a parameter-free unitarization prescription to get physically meaningful predictions. In the second part, we construct simplified models for generic new resonances that can appear in vector boson scattering, with a special focus on the technicalities of tensor resonances.