2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/45309The interplay of QCD in $ΔS=1,2$ non-leptonic weak transitions can be rigorously analyzed, at the inclusive level, by studying the 2--point functions associated with the corresponding $ΔS=1,2$ effective Hamiltonians. The next-to-leading order calculation of these correlators shows a huge ($\gsim 100\%$) gluonic enhancement of the $|ΔI|=1/2$ channel, providing a qualitative understanding of the $|ΔI|=1/2$ rule within QCD.3 pages, 1 figure, FTUV/94-50, IFIC/94-45, Contribution to ICHEP94, LaTeX file, uses ichep.sty (appended at the end: find "% CUT HERE")High Energy Physics - Phenomenologytext