Electroweak precision for W+jet production

TL;DR

This paper presents a detailed calculation of electroweak corrections to W+jet production at the LHC, including off-shell effects, and compares full results with approximations to improve understanding of QCD and EW interplay.

Contribution

It provides the first comprehensive NLO electroweak correction analysis for W+jet production with off-shell effects and implements the results in a flexible Monte Carlo tool.

Findings

Electroweak corrections significantly affect W+jet production rates.

Comparison shows the approximation is reasonable but can be improved.

Results enhance precision predictions for LHC analyses.

Abstract

In this talk we discuss the next-to-leading-order electroweak (EW) corrections to W-boson + jet hadroproduction [1] and compare the full result to a simple approximation assuming factorization of EW and QCD corrections for the charged-current Drell-Yan process. The W-boson resonance is treated consistently using the complex-mass scheme, and all off-shell effects are taken into account. The corresponding next-to-leading-order QCD corrections have also been recalculated. All the results are implemented in a flexible Monte Carlo code. Selected numerical results for this Standard Model benchmark process are presented for the LHC. The comparison of our result to an approximation based on the EW corrections to W-boson production without additional jets is a step towards a better understanding of the interplay between QCD and EW effects for W-boson production in general.