Title: Hadronic decays of the Z0 Boson: Jey physics and tests of QCD with OPAL
Abstract: Several QCD plus hadronisation models are compared to measured event shape distributions and the model parameters are adjusted to the data. QCD shower models provide a detailed description of hadroniv Z0 decays and, with the same model parameters, of lower energy e+s− annihilation data as well. The momentum spectra of charged particles are consistent with the expectatioins of the soft gluon coherence and Local Parton Hadron Duality. From the measurement of jet production rates, the strong coupling constant is determined to be, in second order perturbation theory, αs(MZ) = 0.116 ± 0.016. Jet production rates and 4-jet angular correlations provide evidence for the running of αs and for the nonabelian structure of QCD.
Publication Year: 1991
Publication Date: 1991-08-01
Language: en
Type: article
Indexed In: ['crossref']
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