2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/40822We present a SU(2)_L * SU(2)_R * U(1) left-right symmetric model for elementary particles and their connection with the fermion mass spectrum. New mirror fermions and a minimal set of Higgs particles are proposed. The model can accommodate a consistent pattern for charged and neutral fermion masses as well as neutrino oscillations. The connection between the left and right sectors can be done by the neutral vector gauge boson Z and a new heavy Z'.3 pages; to appear in the proceedings of the International Europhysics Conference on High Energy Physics, July 12-18 2001, BudapestHigh Energy Physics - Phenomenologytext