2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/202298Hadronic Z0 decays with identified electrons or muons have been used to measure the forward-backward asymmetries of e^+e^- --> Z0 --> bbbar and e^+e^- --> Z0 --> ccbar events. The asymmetries at three centre-of-mass energies, and the average B mixing parameter, chi, are determined in a simultaneous fit to events with one or two lepton candidates.23 pages, 3 figures, Submitted to Phys. Lett. BHigh Energy Physics - Experimenttext