par Abreu, Pedro;Bertrand, Daniel ;Bricman, Claude ;Vander Velde, Catherine ;Wickens, John H. ; [et al.]
Référence Physics letters. Section B, 332, 3-4, page (488-500)
Publication Publié, 1994
Article révisé par les pairs
Résumé : A total of about 900 000 Z0 → qq̄ decays have been analyzed to measure the B0 - B̄0 mixing probability. Two different b tagging techniques have been used: events with two leptons and events with one lepton and one Λ. From a combination of the two methods the average mixing parameter, χ, was determined to be (12.1 ± 1.6(stat.) ± 0.4(syst.) ± 0.4(model))%.