QCD radiation in WH and WZ production and anomalous coupling measurements

TL;DR

This paper investigates QCD radiation effects in WH and WZ production at the LHC, proposing a dynamical jet veto to improve the sensitivity of anomalous coupling measurements by reducing theoretical uncertainties.

Contribution

It introduces a dynamical jet veto method for more reliable predictions and enhanced sensitivity in anomalous coupling searches in vector boson associated production.

Findings

Dynamical jet veto reduces large logarithms in predictions.

Enhanced sensitivity to anomalous couplings in WZ production.

Improved theoretical reliability at NLO QCD.

Abstract

We study QCD radiation for the WH and WZ production processes at the LHC. We identify the regions sensitive to anomalous couplings, by considering jet observables, computed at NLO QCD with the use of the Monte Carlo program VBFNLO. Based on these observations, we propose the use of a dynamical jet veto. The dynamical jet veto avoids the problem of large logarithms depending on the veto scale, hence, providing more reliable predictions and simultaneously increasing the sensitivity to anomalous coupling searches, especially in the WZ production process.