Complete off-shell effects for top-antitop + jet production with leptonic decays at the LHC

Apr 13, 2016, 12:00 PM
15m
SR2 (DESY Hamburg)

SR2

DESY Hamburg

Heavy Flavours (Charm, Beauty and Top) WG4 Heavy Flavours

Speaker

Dr Giuseppe Bevilacqua (University of Debrecen)

Description

We present results for the NLO QCD corrections to the process $pp \to t\bar{t} j \to W^+W^-b\bar{b} j \to e^+ \nu_e \mu^- \bar{\nu}_\mu b \bar{b} j + X$, including for the first time the full off-shell effects for top quarks and W bosons: double-, single- and non-resonant contributions at the order {\cal{O}}(\alpha_{s}^4 \alpha^4). Focusing on the case of the LHC at 8 TeV, we analyse numerical results for the total cross section and its scale dependence, and show differential distributions. We also provide an estimate of the impact of the off-shell effects within our study.

Primary authors

Dr Giuseppe Bevilacqua (University of Debrecen) Dr Heribertus Bayu Hartanto (RWTH Aachen) Dr Malgorzata Worek (RWTH Aachen) Mr Manfred Kraus (RWTH Aachen)

Presentation materials