Münster 2017 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 85: QCD (Theorie)
T 85.6: Vortrag
Mittwoch, 29. März 2017, 18:00–18:15, VSH 10
Soft gluon resummation for associated production of a massive boson with a top-antitop quark pair — Anna Kulesza1, Leszek Motyka2, •Daniel Schwartländer1, Tomasz Stebel2, and Vincent Theeuwes3 — 1Institute for Theoretical Physics, WWU Münster, D-48149 Münster, Germany — 2Institute of Physics, Jagellonian University, S. Łojasiewicza 11, 30-348 Kraków, Poland — 3Department of Physics, SUNY Buffalo, 261 Fronczak Hall, Buffalo, NY 14260-1500, USA
The measurements of associated production of a vector or a scalar boson with a top-antitop quark pair provide an important test for the Standard Model at the LHC. In particular these are the key processes to measure the top quark properties. Furthermore they are very relevant in searches for new physics, both as being directly sensitive to it and as providing an important background. While NNLO calculations for this particular type of 2 to 3 processes are currently out of reach, a class of corrections beyond NLO can be taken into account with the help of resummation methods. In this talk we consider an application of soft gluon resummation in Mellin space to these processes at hadron colliders and discuss numerical predictions for the LHC.