2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/48539Hyperon non-leptonic weak decay amplitudes are studied in the chiral perturbation theory. The weak interaction vertices caused by the four quark operators are substituted by the products of the hadronic currents and by the phenomenologically introduced weak Hamiltonian of hadron operators. Our study suggests the improvement of the theoretical prediction for the weak decay amplitudes.20 pages, LaTeX file, 1 figure, with epsf.styHigh Energy Physics - PhenomenologyNuclear Theorytext