Multihadronic events atEc.m.=29 GeV and predictions of QCD models fromEc.m.=29 GeV toEc.m.=93 GeV

Hadronization Parton shower Annihilation Electron–positron annihilation Perturbative QCD
DOI: 10.1103/physrevd.37.1 Publication Date: 2002-07-26T20:52:55Z
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ABSTRACT
Multihadronic e+e− annihilation events at a center-of-mass energy of 29 GeV have been studied with both the original (PEP 5) Mark II and upgraded detectors. Detector-corrected distributions from global shape analyses such as aplanarity, Q2-Q1, sphericity, thrust, minor value, oblateness, jet masses, inclusive charged-particle including x, rapidity, p⊥, particle flow are presented. These compared predictions various multihadron event models which use leading-logarithmic shower evolution or QCD matrix elements parton level string cluster fragmentation for hadronization. The new generation parton-shower gives, on average, better description data than previous models. behavior these is to existing data. 93 GeV, roughly expected mass Z0, also presented.Received 14 May 1987DOI:https://doi.org/10.1103/PhysRevD.37.1©1988 American Physical Society
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