Measurement of the Strong Coupling alpha_s from the Four-Jet Rate in e+e- Annihilation using JADE data
High Energy Physics - Experiment
2012-05-21 v2
Abstract
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.
Keywords
Cite
@article{arxiv.0707.0392,
title = {Measurement of the Strong Coupling alpha_s from the Four-Jet Rate in e+e- Annihilation using JADE data},
author = {J. Schieck and S. Bethke and O. Biebel and S. Kluth and P. A. Movilla Fernandez and C. Pahl and the JADE Collaboration},
journal= {arXiv preprint arXiv:0707.0392},
year = {2012}
}
Comments
21 pages, 19 figures. arXiv admin note: substantial text overlap with arXiv:hep-ex/0601048