Determinations of alpha_S at sqrt{s}= 14 to 44 GeV using Resummed Calculations

Details Determinations of alpha_S at sqrt{s}= 14 to 44 GeV using Resummed Calculations Determinations of alpha_S at sqrt{s}= 14 to 44 GeV using Resummed Calculations

2002-05-08

arxiv.org/abs/hep-ex/0205014v2

*Proceedings of the 37th Rencontres de Moriond: QCD and High Energy Hadronic Interactions 2002, Les Arcs, France*, E. Auge and

Physics

High Energy Physics

High Energy Physics - Experiment

4 pages, 5 .eps-figures, LaTeX 2.09, LaTeX2e, uses moriond.sty (included). Contribution to XXXVIIth Rencontres de Moriond: QCD

Scientific paper

The strong coupling constant alpha_S is determined using recently re-analysed e+e- annihilation data collected by the JADE experiment at sqrt{s}= 14 to 44 GeV. The measurements are based on O(alpha_S**2)+NLLA predictions for various event shape observables. The calculations are found to describe reliably data at the lowest energies of the e+e- continuum where non-perturbative contributions become important. The results for alpha_S are in good agreement with the QCD expectation for the running of the strong coupling constant. This is the first determination of alpha_S at sqrt{s}= 14 and 22 GeV based on resummed QCD predictions.

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