Measurement of W-pair production in e+ e− collisions at centre- of-mass energies from 183 to 209 GeV
par Clerbaux, Barbara 
; [et al.]
Référence European Physical Journal C. Particles and Fields, 38, 2, page (147-160)
Publication Publié, 2004
; [et al.]Référence European Physical Journal C. Particles and Fields, 38, 2, page (147-160)
Publication Publié, 2004
Article révisé par les pairs
| Résumé : | The W+W- production cross section is measured from a data sample corresponding to a total integrated luminosity of 683 pb -1, collected by the ALEPH experiment at LEP at centre-of-mass energies from 183 to 209 GeV. Individual cross sections for the different topologies arising from W decays into leptons or hadrons, as well as the total W-pair cross section are given at eight centre-of-mass energies. The results are found to be in agreement with recently developed Standard Model calculations at the one percent level. The hadronic branching fraction of the W boson is measured to be B(W → qq̄) = 67.13 ± 0.37 (stat.) ± 0.15 (syst.)%, from which the CKM matrix element |
