München 2009 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 11: QCD (Theorie) 1

T 11.7: Vortrag

Montag, 9. März 2009, 18:30–18:45, M109

NLO QCD corrections to tri-boson production at the LHC — •Vera Hankele¹, Francisco Campanario^1,2, Carlo Oleari³, Stefan Prestel¹, and Dieter Zeppenfeld¹ — ¹Institut für Theoretische Physik, Universität Karlsruhe, Germany — ²Departament de Fisica Teorica and IFIC, Universitat de Valencia, Spain — ³Universita di Milano-Bicocca and INFN, Sezione di Milano-Bicocca, Italy

The simulation of triple vector boson production at the LHC is important for two reasons. These processes are a Standard Model background for new-physics searches which are characterized by multi-lepton final states, and secondly they are sensitive to quartic electroweak couplings. In order to correctly interpret the data collected at the LHC, precise theoretical predictions for tri-boson processes are needed.

In this talk the production of three massive vector bosons with subsequent leptonic decay is considered. The calculation of the next-to-leading order QCD corrections for the full pp → 6 lepton production cross sections in hadronic collisions will be sketched. Some details on the implementation into the Monte Carlo program VBFNLO and a short description of the program itself will be given. In addition, cross sections as well as distributions for the LHC will be presented.