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QCD matrix elements + parton showers

Catani, S.; Krauss, F.; Webber, B.R.; Kuhn, R.

Authors

S. Catani

F. Krauss

B.R. Webber

R. Kuhn



Abstract

We propose a method for combining QCD matrix elements and parton showers in Monte Carlo simulations of hadronic final states in e+e− annihilation. The matrix element and parton shower domains are separated at some value yini of the jet resolution, defined according to the kT-clustering algorithm. The matrix elements are modified by Sudakov form factors and the parton showers are subjected to a veto procedure to cancel dependence on yini to next-to-leading logarithmic accuracy. The method provides a leading-order description of hard multi-jet configurations together with jet fragmentation, while avoiding the most serious problems of double counting. We present first results of an approximate implementation using the event generator APACIC++.

Citation

Catani, S., Krauss, F., Webber, B., & Kuhn, R. (2001). QCD matrix elements + parton showers. Journal of High Energy Physics, 2001(11), https://doi.org/10.1088/1126-6708/2001/11/063

Journal Article Type Article
Publication Date Nov 1, 2001
Deposit Date Jul 16, 2007
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 2001
Issue 11
DOI https://doi.org/10.1088/1126-6708/2001/11/063
Keywords LEP HERA, SLC Physics, QCD, Jets.

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