A simple shower and matching algorithm

Details A simple shower and matching algorithm A simple shower and matching algorithm

2007-07-25

arxiv.org/abs/0707.3652v1

Phys.Rev.D78:014026,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

32 pages, 6 figures

Scientific paper

10.1103/PhysRevD.78.014026

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.

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