Near-to-planar 3-jet events in and beyond QCD perturbation theory
A. Banfi, Yu. L. Dokshitzer, G. Marchesini, G. Zanderighi
Abstract
We present the results of QCD analysis of out-of-event-plane momentum distribution in 3-jet e+e- annihilation events. We consider the all-order resummed perturbative prediction and the leading power suppressed non-perturbative corrections to the mean value <Kout> and the distribution and explain their non-trivial colour structure. The technique we develop aims at improving the accuracy of the theoretical description of multi-jet ensembles, in particular in hadron-hadron collisions.
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