2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/42457We point to a potentially large contribution of the QCD trace anomaly to the isoscalar pion pair production in Kaon decays. This contribution arises from the long-distance evolution of a 7-dimensional quark-gluon operator generated by short-distance QCD corrections to the Delta_S = 1 Fermi Hamiltonian.Latex, 2 pages. Talk presented at the 38th Rencontres de Moriond on Electroweak Interactions and Unified Theories, Les Arcs, France, March 15-22, 2003. To appear in the proceedingsHigh Energy Physics - Phenomenologytext