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Perturbative QCD description of mean jet and particle multiplicities in e+e− annihilation

✍ Scribed by Sergio Lupia; Wolfgang Ochs

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
422 KB
Volume
71
Category
Article
ISSN
0920-5632

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✦ Synopsis

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 Pai'ton Hadron Duality. Predictions for LEP-II energies are presented. Furthermore we study the sensitivity to the cutoff parameter Q0 and the scale of a~.

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