2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/188980We investigate in detail the predictions coming from the d=4 operators for proton decay. We find the most general constraints for the R-parity violating couplings coming from proton decay, taking into account all fermion mixing and in different supersymmetric scenarios.8 pages, several corrections, to appear in J.Phys.G (2005)High Energy Physics - PhenomenologyHigh Energy Physics - Experimenttext