Vector-Boson Fusion and Vector-Boson Scattering

TL;DR

This review discusses the phenomenology, higher-order corrections, and experimental aspects of vector-boson fusion and scattering processes at the LHC, emphasizing their role in testing the Standard Model and probing anomalous gauge couplings.

Contribution

It provides a comprehensive overview of recent theoretical developments, including higher-order calculations and unitarization methods, for vector-boson fusion and scattering processes.

Findings

Higher-order QCD and electro-weak corrections are available for key processes.

Progress has been made in incorporating parton-shower effects.

Experimental searches are ongoing and evolving for these processes.

Abstract

Vector-boson fusion and vector-boson scattering are an important class of processes for the Large Hadron Collider at CERN. It is characterized by two high-energetic jets in the forward regions of the detector and reduced jet activity in the central region. The higher center-of-mass energy during the current and subsequent runs strongly boosts the sensitivity in these processes and allows to test the predictions of the Standard Model to a high precision. In this review, we first present the main phenomenological features of vector-boson fusion and scattering processes. Then we discuss the effects of higher-order corrections, which are available at NLO QCD for all processes and up to N3LO QCD and NLO electro-weak for VBF-H production. An additional refinement is the addition of parton-shower effects, where recently a lot of progress has been made. The appearance of triple and quartic gauge vertices in the production processes enables us to probe anomalous gauge couplings. We introduce and compare the different parametrizations used in the literature and also discuss the issue of unitarity violation and common unitarization procedures. Finally, we give a short overview of current and possible future experimental searches.