218 articles – 617 Notices  [english version]
 HAL : in2p3-00022176, version 1
 arXiv : hep-ex/0406011
 European Physical Journal C 37 (2004) 1-23
 The measurement of $\alpha_{s}$ from event shapes with the DELPHI detector at the highest LEP energies
 DELPHI Collaboration(s)
 (2004)
 Hadronic event shape distributions are determined from data in e+e- collisions between 183 and 207 GeV. From these the strong coupling alpha_s is extracted in O(alpha_s^2), NLLA and matched O(alpha_s^2)+NLLA theory. Hadronisation corrections evaluated with fragmentation model generators as well as an analytical power ansatz are applied. Comparing these measurements to those obtained at and around M_Z allows a combined measurement of alpha_s from all DELPHI data and a test of the energy dependence of the strong coupling.
 Thème(s) : Physique/Physique des Hautes Energies - Expérience
 Lien vers le texte intégral : http://fr.arXiv.org/abs/hep-ex/0406011
 in2p3-00022176, version 1 http://hal.in2p3.fr/in2p3-00022176 oai:hal.in2p3.fr:in2p3-00022176 Contributeur : Emmanuelle Vernay <> Soumis le : Mardi 31 Août 2004, 09:59:30 Dernière modification le : Mercredi 26 Octobre 2005, 13:52:13