Bonn 2010 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 11: QCD (Theorie) II

T 11.3: Vortrag

Dienstag, 16. März 2010, 17:15–17:30, HG XVI

Hadron Level Event Generation at NLO Accuracy with SherpaJennifer Archibald1, Tanju Gleisberg2, Stefan Hoeche3, Frank Krauss1, •Marek Schoenherr4, Steffen Schumann5, Frank Siegert6, and Jan Winter71Institute for Particle Physics Phenomenology, Durham University, Durham DH1 3LE, UK — 2Stanford Linear Accelerator Center, Stanford University, Stanford, CA 94309, USA — 3Institut fuer Theoretische Physik, Universitaet Zuerich, CH-8057 Zuerich, Switzerland — 4Institut fuer Kern- und Teilchenphysik, TU Dresden, D-01062 Dresden, Germany — 5Institut fuer Theoretische Physik, Universitaet Heidelberg, D-69120 Heidelberg, Germany — 6Department of Physics & Astronomy, University College London, London WC13 6BT, UK — 7Fermi National Accelerator Laboratory, Batavia, IL 60510, USA

Sherpa is a fully equipped tool for hadron level event generation for collider experiments. Using automated tree-level matrix element generators for the hard interaction and an automated matching with parton showers via the CKKW method, its accuracy is essentially limited to LO+NLL. Therefore, the next step is to extend the framework for computations at NLO accuracy in the hard interaction. While automatic generation of dipole subtraction terms is already available, the virtual contribution either is limited to a set of hard coded processes or needs to be fed in externally. Further, the parton showers need to be attached consistently, suitable also for multileg matching. In the talk a short review of the status of the framework for hadron level event generation at NLO+NLL accuracy will be given.

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