2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/183917The recent experimental results on neutrino oscillation and on muonium-antimuonium conversion require extension of the minimal 3-3-1 model. We review the constraints imposed to the model by those measurements and suggest a pattern of leptonic mixing, with charged leptons in a non-diagonal basis, which accounts for the neutrino physics and circumvents the tight muonium-antimuonium bounds on the model. We also illustrate a scenario where this pattern could be realized.4 pages; abbreviated version, conclusions unchangedHigh Energy Physics - Phenomenologytext