2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/215825We explore the Delta-I= 1/2 rule and epsilon'/epsilon in K -> pi pi transitions using a Dyson-Schwinger equation model. Exploiting the feature that QCD penguin operators direct K^0_S transitions through 0^{++} intermediate states, we find an explanation of the enhancement of I=0 K -> pi pi transitions in the contribution of a light sigma-meson. This mechanism also affects epsilon'/epsilon.7 pages, REVTEXNuclear TheoryHigh Energy Physics - ExperimentHigh Energy Physics - Phenomenologytext