Measurements of alphas from hadronic event shapes in e+e- annihilation
J. C. Thompson
Abstract
New studies of hadronic event shape observables in e+ e- collisions between 13 and 183 GeV CM energy have enabled the running of alphas to be confirmed and the validity of non-perturbative power-law corrections to be investigated. A more precise value of alphas(MZ) with reduced theoretical errors has been reported from fitting 18 oriented event shape distributions measured in one experiment at the Z.
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