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Measurement of the strong coupling alpha(s) from the four-jet rate in e+ e- annihilation using JADE data

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Published
<mark>Journal publication date</mark>10/2006
<mark>Journal</mark>The European Physical Journal C (EPJ C) - Particles and Fields
Issue number1
Volume48
Number of pages11
Pages (from-to)3-13
Publication StatusPublished
<mark>Original language</mark>English

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 αS(MZ0)=0.1159±0.0004(stat.)±0.0012(exp.)±0.0024(had.)±0.0007(theo.) in agreement with the world average.