Matching matrix elements and parton showers with HERWIG and PYTHIA

Mrenna, S.; Richardson, P.

doi:10.1088/1126-6708/2004/05/040

Matching matrix elements and parton showers with HERWIG and PYTHIA

Mrenna, S.; Richardson, P.

Authors

S. Mrenna

Professor Peter Richardson peter.richardson@durham.ac.uk
Professor

Abstract

We report on our exploration of matching matrix element calculations with the parton-shower models contained in the event generators HERWIG and Pythia. We describe results for e+e- collisions and for the hadroproduction of W bosons and Drell-Yan pairs. We compare methods based on (1) a strict implementation of ideas proposed by Catani, et al., (2) a generalization based on using the internal Sudakov form factors of HERWIG and Pythia, and (3) a simpler proposal of M. Mangano. Where appropriate, we show the dependence on various choices of scales and clustering that do not affect the soft and collinear limits of the predictions, but have phenomenological implications. Finally, we comment on how to use these results to state systematic errors on the theoretical predictions.

Citation

Mrenna, S., & Richardson, P. (2004). Matching matrix elements and parton showers with HERWIG and PYTHIA. Journal of High Energy Physics, 2004(05), https://doi.org/10.1088/1126-6708/2004/05/040

Journal Article Type	Article
Publication Date	May 1, 2004
Deposit Date	May 8, 2008
Journal	Journal of High Energy Physics
Print ISSN	1126-6708
Electronic ISSN	1029-8479
Publisher	Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Peer Reviewed	Peer Reviewed
Volume	2004
Issue	05
DOI	https://doi.org/10.1088/1126-6708/2004/05/040
Keywords	QCD, Jets.