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T: Fachverband Teilchenphysik
T 10: QCD (Theorie) I
T 10.2: Talk
Wednesday, March 30, 2011, 17:00–17:15, 30.23: 10-1
Complete off-shell effects in top quark pair hadroproduction with leptonic decay at next-to-leading order — •Giuseppe Bevilacqua1, Michal Czakon1, Andreas van Hameren2, Costas Papadopoulos3, and Malgorzata Worek4 — 1Institut für Theoretische Teilchenphysik und Kosmologie, RWTH Aachen, Aachen, Germany — 2The Henryk Niewodniczanski Institute of Nuclear Physics, Cracow, Poland — 3Institute of Nuclear Physics, NCSR Demokritos, Athens, Greece — 4Bergische Universität Wuppertal, Wuppertal, Germany
We present results for NLO QCD corrections to the process pp (pp) → tt → W+W−bb → e+ νe µ− νµb b + X, including the full set of double-, single- and non-resonant top contributions at the order O(αS3 αEW4). A comparative analysis at Tevatron run II and LHC will be discussed, presenting total cross sections together with scale dependence and several differential distributions. Comparison to the narrow-width approximation for top quarks will be also discussed.