DESY Theory Seminar

Combining parton showers and fixed-order calculations

by Stefan Prestel (DESY)

Europe/Berlin
Buildg. 2a, Sem.R. 2 (DESY Hamburg)

Buildg. 2a, Sem.R. 2

DESY Hamburg

Description
In this talk, I will discuss how QCD event generators can be used to combine fixed-order multi-jet matrix elements. A successful combination allows to construct inclusive samples of scattering events, which describe states with multiple well-separated jets simultaneously with improved accuracy, while retaining the low-energy and non-perturbative features of the event generator. I will mainly focus on the recent 'unitarised merging' and 'NLO merging' methods, and on developments in the Pythia8 program.
Slides