Studies of QCD at LEPII

A combination of measurements of alpha_s in e+e- annihilation at LEP is presented. Distributions of various event-shape variables measured by ALEPH, DELPHI, L3 and OPAL at centre-of-mass energies from 41 GeV to 206 GeV are analysed in a common theoretical framework using O(a_s**2)+NLLA predictions....

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Detalles Bibliográficos
Autor principal: Stenzel, Hasko
Lenguaje:eng
Publicado: 2003
Materias:
Particle Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1140/epjcd/s2004-03-1833-x
http://cds.cern.ch/record/644065
Descripción
Sumario:A combination of measurements of alpha_s in e+e- annihilation at LEP is presented. Distributions of various event-shape variables measured by ALEPH, DELPHI, L3 and OPAL at centre-of-mass energies from 41 GeV to 206 GeV are analysed in a common theoretical framework using O(a_s**2)+NLLA predictions. The dominant theoretical uncertainties associated to missing higher orders are studied in detail.

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