Münster 2017 – scientific programme

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T: Fachverband Teilchenphysik

T 39: Higgs-Physik (Theorie) 1

T 39.6: Talk

Tuesday, March 28, 2017, 12:15–12:30, VSH 06

Higgs production in association with off-shell top--antitop pairs at NLO EW and QCD at the LHC — •Mathieu Pellen and Ansgar Denner — Universitaet Wuerzburg, Wuerzburg, Germany

As the Higgs production in association with top-antitop pairs is about to be measured at the LHC, precise and realistic predictions are of prime importance. We present NLO electroweak (EW) corrections to the full process where all interference, off-shell and non-resonant contributions are taken into account. The EW corrections turn out to be below one per cent for the integrated cross section but can exceed 10% in certain phase-space regions. The results of the full computation are supported by two calculations in the double-pole approximation. These also allow to infer the effect of off-shell contributions. Finally, we provide combined predictions featuring both NLO EW and QCD corrections in a common set-up. The methods used and some exemplary results will be presented.