Skip to main content

Research Repository

Advanced Search

Matching matrix elements and parton showers with HERWIG and PYTHIA

Mrenna, S.; Richardson, P.


S. Mrenna


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.


Mrenna, S., & Richardson, P. (2004). Matching matrix elements and parton showers with HERWIG and PYTHIA. Journal of High Energy Physics, 2004(05),

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
Keywords QCD, Jets.