4-11 July 2012
Melbourne Convention and Exhibition Centre
Australia/Melbourne timezone
ICHEP2012 - 36th International Conference for High Energy Physics

A rigorous assessment of intrinsic accuracies and uncertainties of NLO+PS matching methods

5 Jul 2012, 17:00
Room 219 (Melbourne Convention and Exhibition Centre)

Room 219

Melbourne Convention and Exhibition Centre

Melbourne Australia
Parallel Sessions Track 6. QCD, Jets, Parton Distributions TR 6 - RM 217 - QCD, Jets, Parton Distributions


Dr Marek Schoenherr (University of Durham (UK))


Similarities and differences between the MC@NLO and the POWHEG methods for matching NLO calculations to parton showers are discussed. Particular emphasis is put on their respective formal accuracies. Implementations of both methods in the SHERPA event generator framework are employed to assess their impact on representative observables. Some freedoms in both formulations will be exploited to quantify the uncertainties for different processes of interest. Further, NLO+PS matched results for complex final states, e.g. the production of a W boson in association with up to 3 jets or a Higgs boson with up to 1 jets will be presented.

Primary authors

Frank Martin Krauss (University of Durham (GB)) Frank Siegert (Fakultaet fuer Physik) Dr Marek Schoenherr (University of Durham (UK)) Stefan Hoeche (SLAC)

Presentation materials