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A Positive-Weight Next-to-Leading-Order Monte Carlo for e+e- Annihilation to Hadrons

Oluseyi Latunde-Dada, Stefan Gieseke, Bryan Webber

hep-pharXiv:hep-ph/0612281

Abstract

We apply the positive-weight Monte Carlo method of Nason for simulating QCD processes accurate to Next-To-Leading Order to the case of e+e- annihilation to hadrons. The method entails the generation of the hardest gluon emission first and then subsequently adding a `truncated' shower before the emission. We have interfaced our result to the Herwig++ shower Monte Carlo program and obtained better results than those obtained with Herwig++ at leading order with a matrix element correction.

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