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arXiv:0707.3652
FERMILAB-PUB-07-160-T
SACLAY-SPHT-T07-107
Phys.Rev. D78 (2008) 014026

by: Giele, Walter T. (Fermilab) et al.

Abstract:
We present a simple formalism for parton-shower Markov chains. As a first step towards more complete uncertainty bands, we incorporate a comprehensive exploration of the ambiguities inherent in such calculations. To reduce this uncertainty, we then introduce a matching formalism which allows a generated event sample to simultaneously reproduce any infrared safe distribution calculated at leading or next-to-leading order in perturbation theory, up to sub-leading corrections. To enable a more universal definition of perturbative calculations, we also propose a more general definition of the hadronization cutoff. Finally, we present an implementation of some of these ideas for final-state gluon showers, in a code dubbed VINCIA.
Link: 
http://inspirehep.net/record/756628
Publ date: 
Tuesday, July 24, 2007 - 23:00