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Perturbative QCD Description of Mean Jet and Particle Multiplicities in e+e- annihilation

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arxiv hep-ph/9711255 v1 pith:NCVII4UE submitted 1997-11-06 hep-ph

Perturbative QCD Description of Mean Jet and Particle Multiplicities in e+e- annihilation

classification hep-ph
keywords multiplicitiesannihilationhadronpartonpresentedalphacommoncomplete
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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A complete numerical solution of the evolution equation for parton multiplicities in quark and gluon jets with initial conditions at threshold is presented. Data on both hadron and jet multiplicities in e+e- annihilation are well described with a common normalization, giving further support to the picture of Local Parton Hadron Duality. Predictions for LEP-II energies are presented. Furthermore we study the sensitivity to the cutoff parameter Q_0 and the scale of alpha_s.

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