Anomalous couplings in WZ production beyond NLO QCD

TL;DR

This paper investigates the effects of anomalous couplings in WZ production at high precision, employing advanced QCD calculations and a novel jet veto technique to improve analysis accuracy.

Contribution

It introduces a method combining LoopSim and VBFNLO for NLO QCD calculations of WZ production with anomalous couplings, and proposes a dynamical jet veto to isolate relevant events.

Findings

Higher order corrections are dominated by hard jet radiation.

Jet veto effectively removes jet-dominated events without problematic logarithms.

Method improves the precision of anomalous coupling analyses.

Abstract

We study WZ production with anomalous couplings at $\bar{n}$NLO QCD using the LoopSim method in combination with the Monte Carlo program VBFNLO. Higher order corrections to WZ production are dominated by additional hard jet radiation. Those contributions are insensitive to anomalous couplings and should thus be removed in analyses. We do this using a dynamical jet veto based on the transverse energy of the QCD and EW final state particles. This removes jet dominated events without introducing problematic logs like a fixed $p_{\text{T}}$ jet veto.