Distributions are presented of event shape variables, jet roduction rates and charged particle momenta obtained from 53 000 hadronic Z decays. They are compared to the predictions of the QCD+hadronization models JETSET, ARIADNE and HERWIG, and are used to optimize several model parameters. The JETSET and ARIADNE coherent parton shower (PS) models with running αs and string fragmentation yield the best description of the data. The HERWIG parton shower model with cluster fragmentation fits the data less well. The data are in better agreement with JETSET PS than with JETSET O(αS 2) matrix elements (ME) even when the renormalization scale is optimized.

Buskulic, D., Decamp, D., Goy, C., Lees, J., Minard, M., Mours, B., et al. (1992). Properties of hadronic Z decays and test of QCD generators. ZEITSCHRIFT FÜR PHYSIK. C, PARTICLES AND FIELDS, 55(2), 209-234 [10.1007/BF01482583].

Properties of hadronic Z decays and test of QCD generators

CARPINELLI, Massimo;
1992

Abstract

Distributions are presented of event shape variables, jet roduction rates and charged particle momenta obtained from 53 000 hadronic Z decays. They are compared to the predictions of the QCD+hadronization models JETSET, ARIADNE and HERWIG, and are used to optimize several model parameters. The JETSET and ARIADNE coherent parton shower (PS) models with running αs and string fragmentation yield the best description of the data. The HERWIG parton shower model with cluster fragmentation fits the data less well. The data are in better agreement with JETSET PS than with JETSET O(αS 2) matrix elements (ME) even when the renormalization scale is optimized.
Articolo in rivista - Articolo scientifico
Physics
English
209
234
26
Buskulic, D., Decamp, D., Goy, C., Lees, J., Minard, M., Mours, B., et al. (1992). Properties of hadronic Z decays and test of QCD generators. ZEITSCHRIFT FÜR PHYSIK. C, PARTICLES AND FIELDS, 55(2), 209-234 [10.1007/BF01482583].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/390441
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