2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/48964The recent observations of atmospheric nu events from the Super-Kamiokande experiment are compatible with three-flavor neutrino oscillations, occurring dominantly in the nu_mu<--->nu_tau channel and subdominantly in the nu_mu<--->nu_e channel. We present an updated analysis of the three-flavor mass-mixing parameters consistent with the present phenomenology, including the latest 45 kTy data sample from Super-Kamiokande. A comparison with our previous results, based on 33 kTy data, shows that the oscillation evidence is strengthened, and that the neutrino mass-mixing parameters are constrained in smaller ranges.5 pages, 3 figures. Presented at WIN99. Updated analysis including 45 kTy Super-Kamiokande dataHigh Energy Physics - Phenomenologytext