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First determination of the strong coupling constant using NNLO predictions for hadronic event shapes in $e^+ e^-$ annihilations
We present the first determination of the strong coupling constant from a fit of next-to-next-to-leading order QCD predictions to event-shape variables, measured in e+e− annihilations at LEP. The data have been collected by the ALEPH detector at centre-of-mass energies between 91 and 206 GeV. Compar...
| Autores principales: | , , , , , |
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| Lenguaje: | eng |
| Publicado: |
2007
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1088/1126-6708/2008/02/040 http://cds.cern.ch/record/1073063 |