QCD studies with $e^+ e^-$ annihilation data from 130 to 172 GeV

Hadronic events produced at LEP at centre-of-mass energies of 130, 136, 161 and 172 GeV have been studied and compared with QCD predictions. Distributions of event-shape observables, jet rates, momentum spectra and multiplicities are presented and compared to the predictions of several Monte Carlo m...

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Detalles Bibliográficos
Autores principales: Cowan, G D, Gao, Y, Jones, R, Stenzel, H
Lenguaje:eng
Publicado: 1997
Materias:
Particle Physics - Experiment
Acceso en línea:http://cds.cern.ch/record/407102
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author Cowan, G D
Gao, Y
Jones, R
Stenzel, H
author_facet Cowan, G D
Gao, Y
Jones, R
Stenzel, H
author_sort Cowan, G D
collection CERN
description Hadronic events produced at LEP at centre-of-mass energies of 130, 136, 161 and 172 GeV have been studied and compared with QCD predictions. Distributions of event-shape observables, jet rates, momentum spectra and multiplicities are presented and compared to the predictions of several Monte Carlo models and analytic QCD calculations. From a fit of O(alpha_s^2)+NLLA QCD calculations to the differential two-jet rate, alpha_s has been determined at various energies. The mean charged particle multiplicities and the peak positions xi_star in the xi = ln(1/x_p) distribution have also been determined. These results have been compared to lower energy data and to analytic QCD or Monte Carlo predictions for their energy evolution.
id cern-407102
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1997
record_format invenio
spelling cern-4071022019-09-30T06:29:59Zhttp://cds.cern.ch/record/407102engCowan, G DGao, YJones, RStenzel, HQCD studies with $e^+ e^-$ annihilation data from 130 to 172 GeVParticle Physics - ExperimentHadronic events produced at LEP at centre-of-mass energies of 130, 136, 161 and 172 GeV have been studied and compared with QCD predictions. Distributions of event-shape observables, jet rates, momentum spectra and multiplicities are presented and compared to the predictions of several Monte Carlo models and analytic QCD calculations. From a fit of O(alpha_s^2)+NLLA QCD calculations to the differential two-jet rate, alpha_s has been determined at various energies. The mean charged particle multiplicities and the peak positions xi_star in the xi = ln(1/x_p) distribution have also been determined. These results have been compared to lower energy data and to analytic QCD or Monte Carlo predictions for their energy evolution.CERN-OPEN-99-323oai:cds.cern.ch:4071021997-07-19
spellingShingle Particle Physics - Experiment
Cowan, G D
Gao, Y
Jones, R
Stenzel, H
QCD studies with $e^+ e^-$ annihilation data from 130 to 172 GeV
title QCD studies with $e^+ e^-$ annihilation data from 130 to 172 GeV
title_full QCD studies with $e^+ e^-$ annihilation data from 130 to 172 GeV
title_fullStr QCD studies with $e^+ e^-$ annihilation data from 130 to 172 GeV
title_full_unstemmed QCD studies with $e^+ e^-$ annihilation data from 130 to 172 GeV
title_short QCD studies with $e^+ e^-$ annihilation data from 130 to 172 GeV
title_sort qcd studies with $e^+ e^-$ annihilation data from 130 to 172 gev
topic Particle Physics - Experiment
url http://cds.cern.ch/record/407102
work_keys_str_mv AT cowangd qcdstudieswitheeannihilationdatafrom130to172gev
AT gaoy qcdstudieswitheeannihilationdatafrom130to172gev
AT jonesr qcdstudieswitheeannihilationdatafrom130to172gev
AT stenzelh qcdstudieswitheeannihilationdatafrom130to172gev

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