2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/45009Within the framework of the factorization approximation, two body non-leptonic decays of $B$ mesons are related to semileptonic matrix elements and form factors, evaluated with an effective lagrangian incorporating both chiral and heavy quark symmetries. Using semileptonic $D$-decay data, estimates for nonleptonic processes are obtained.6 pages, LaTeX (style article), Contribution to the proceedings of the Advanced Study Conference on Heavy Flavours, Pavia, September 3-7High Energy Physics - Phenomenologytext