$Z\gamma$ production in association with two jets at next-to-leading order QCD

TL;DR

This paper presents next-to-leading order QCD corrections for $Z\gamma$ production with two jets, improving theoretical precision and reducing uncertainties crucial for LHC measurements.

Contribution

It provides the first NLO QCD calculations for these processes, including an optimal cut to suppress radiative photon emission effects.

Findings

Significant reduction in scale uncertainties at NLO

QCD corrections are phase space dependent

Enhanced precision for LHC measurements

Abstract

Next-to-leading order QCD corrections to the QCD-induced $pp \rightarrow l^+l^- \gamma j j +X$ and $pp \rightarrow \bar{\nu}_l \nu_l \gamma jj+X$ processes are presented. The latter is used to find an optimal cut to reduce the contribution of radiative photon emission off the charged leptons in the first channel. As expected, the scale uncertainties are significantly reduced at NLO and the QCD corrections are phase space dependent and important for precise measurements at the LHC.