par Abreu, Pedro;Bertrand, Daniel ;Braibant, Sylvie J.S.J. ;Bricman, Charles ;Cao, Futian;Daubie, Evelyne;De Boeck, Hugo;De Clercq, Catherine;Grard, Fernand ;Herquet, P. ;Kesteman, José;Lemonne, Jacques ;Pingot, Omer;Stichelbaut, Frédéric T. ;Tavernier, S. ;Vander Velde, Catherine ;Van Dominck, W.K.;Verbeure, F;Wickens, John H. ; [et al.]
Référence Zeitschrift für Physik. C, Particles and fields, 54, 1, page (55-73)
Publication Publié, 1992-03
Référence Zeitschrift für Physik. C, Particles and fields, 54, 1, page (55-73)
Publication Publié, 1992-03
Article révisé par les pairs
Résumé : | Distributions of event shape variables obtained from 120600 hadronic Z decays measured with the DELPHI detector are compared to the predictions of QCD based event generators. Values of the strong coupling constant αs are derived as a function of the renormalization scale from a quantitative analysis of eight hadronic distributions. The final result, αs(MZ), is based on second order perturbation theory and uses two hadronization corrections, one computed with a parton shower model and the other with a QCD matrix element model. © 1992 Springer-Verlag. |