NLO QCD and EW corrections to processes involving off-shell top quarks

TL;DR

This paper reviews recent advances in calculating next-to-leading order QCD and electroweak corrections for processes involving off-shell top quarks, highlighting their impact on differential distributions and the importance of off-shell effects.

Contribution

It provides the first full NLO electroweak corrections for off-shell top quark pair production and combines these with existing QCD corrections for processes involving a Higgs boson.

Findings

Electroweak corrections significantly affect differential distributions.

Off-shell contributions are crucial for accurate predictions.

Combined NLO QCD and EW corrections improve theoretical precision.

Abstract

We review recent results on next-to-leading order (NLO) QCD and electroweak (EW) corrections for processes involving off-shell top quarks. For the off-shell production of two top quarks that decay leptonically, the full NLO EW corrections have been computed. For the very same process in association with a Higgs boson, EW corrections have been calculated and combined with existing NLO QCD corrections. In both cases, selected differential distributions are shown. In these proceedings, particular emphasis is put on the effect of the EW corrections as well as the off-shell contributions.