Abstract
A combination of measurements of α 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 \(\cal{O}\)(α s 2)+NLLA predictions. The dominant theoretical uncertainties associated to missing higher orders are studied in detail.
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Stenzel, H. Studies of QCD at LEPII. Eur Phys J C 33 (Suppl 1), s413–s415 (2004). https://doi.org/10.1140/epjcd/s2004-03-1833-x
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DOI: https://doi.org/10.1140/epjcd/s2004-03-1833-x