NLO electroweak and QCD corrections to off-shell ttW production at the LHC

TL;DR

This paper provides the first combined NLO electroweak and QCD corrections to off-shell ttW production at the LHC, including non-resonant effects, spin correlations, and interferences, crucial for precise theoretical predictions.

Contribution

It introduces the first comprehensive calculation of combined NLO electroweak and QCD corrections for off-shell ttW production, incorporating full spin correlations and non-resonant effects.

Findings

Enhanced accuracy in theoretical predictions for ttW production.

Quantitative assessment of electroweak and QCD correction impacts.

Improved modeling of final states for LHC measurements.

Abstract

The foreseen luminosities for the next LHC runs will enable precise differential measurements of the associated production of top-antitop pairs with a W boson. Therefore, providing accurate theory predictions for this process is needed for realistic final states. We present the first combination of NLO electroweak and QCD corrections to off-shell ttW$^+$ production in the three-charged-lepton channel, including non-resonant effects, full spin-correlations and interferences. Such radiative corrections comprise the electroweak and QCD corrections to the leading QCD order, and the QCD corrections to the leading electroweak order.