QCD studies with e+e- annihilation data at 172-189 GeV

Simple item page
dc.creatorThe OPAL collaboration
dc.creatorAbbiendi, G
dc.date2000-02-03
dc.date.accessioned2026-07-07T12:01:28Z
dc.date.available2026-07-07T12:01:28Z
dc.descriptionWe have studied hadronic events from e+e- annihilation data at centre-of-mass energies of sqrt{s}=172, 183 and 189 GeV. The total integrated luminosity of the three samples, measured with the OPAL detector, corresponds to 250 pb^-1. We present distributions of event shape variables, charged particle multiplicity and momentum, measured separately in the three data samples. From these we extract measurements of the strong coupling alpha_s, the mean charged particle multiplicity <nch> and the peak position xi_0 in the xi_p=ln(1/x_p) distribution. In general the data are described well by analytic QCD calculations and Monte Carlo models. Our measured values of alpha_s, <nch> and xi_0 are consistent with previous determinations at sqrt{s}=MZ.
dc.description49 pages, 13 figures, submitted to Eur. Phys. J. C
dc.identifierhttps://arxiv.org/abs/hep-ex/0002012
dc.identifierhttp://arxiv.org/abs/hep-ex/0002012
dc.identifierEur.Phys.J.C16:185-210,2000
dc.identifierdoi:10.1007/s100520050015
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/207107
dc.subjectHigh Energy Physics - Experiment
dc.titleQCD studies with e+e- annihilation data at 172-189 GeV
dc.typetext

Files

Collections

arXiv