Measurement of the strong coupling αS from the four-jet rate in e+e- annihilation using JADE data
Max-Planck-Institut für Physik, Föhringer Ring 6, 80805, Munich, Germany
2 Ludwig-Maximilians-Universität München, Am Coulombwall 1, 85748, Garching, Germany
3 Lawrence Berkeley National Laboratory, 1 Cyclotron Rd., Berkeley, CA, 94720, USA
Published online: 19 September 2006
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 in agreement with the world average.
© Springer-Verlag Berlin Heidelberg, 2006