Measurements of alpha_s from hadronic event shapes in e+e- annihilation

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New studies of hadronic event shape observables in e+ e- collisions between 13 and 183 GeV CM energy have enabled the running of alpha_s to be confirmed and the validity of non-perturbative power-law corrections to be investigated. A more precise value of alpha_s(M_Z) with reduced theoretical errors has been reported from fitting 18 oriented event shape distributions measured in one experiment at the Z.
3 pages, 2 figures, ICHEP Vancouver, Canada, 1998

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High Energy Physics - Experiment

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http://salesiana.dossiersoluciones.com/handle/123456789/38227

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/hep-ex/9812004
 http://arxiv.org/abs/hep-ex/9812004

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arXiv