Measurement of the Strong Coupling alpha_s from the Four-Jet Rate in e+e- Annihilation using JADE data

Data from e+e- annihilation into hadrons collected by the JADE experiment at centre-of-mass energies between 14 GeV and 44 GeV are used to study the four-jet event production rate as a function of the Durham jet algorithm's resolution parameter ycut. The four-jet rate is compared to QCD next-to...

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Bibliographic Details
Published in:arXiv.org 2012-05
Main Authors: Schieck, J, Bethke, S, Biebel, O, Kluth, S, Movilla Fernandez, P A, Pahl, C, the JADE Collaboration
Format: Article
Language:English
Subjects:
Algorithms
Coupling
Hadrons
Logarithms
Mathematical analysis
Online Access:Get full text
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Summary:Data from e+e- annihilation into hadrons collected by the JADE experiment at centre-of-mass energies between 14 GeV and 44 GeV are used to study the four-jet event production rate as a function of the Durham jet algorithm's resolution parameter ycut. The four-jet rate is compared to QCD next-to-leading order calculations including resummation of large logarithms in the next-to-leading logarithmic approximation. The strong coupling measured from the four-jet rate is as(MZ)=0.1159+-0.0004(stat)+-0.0012(expt)+-0.0024(had)+-0.0007(theo) in agreement with the world average.
ISSN:2331-8422
DOI:10.48550/arxiv.0707.0392