SEMINAR      Thursday, April 8th 2004 - h. 12:00  High Energy Physics Building, Aula A34     Stefanie TRINE  Louvain University       "QCD ANOMALIES IN HADRONIC WEAK DECAYS" Abstract The flavour-changing operators associated with the strong axial and trace anomalies are considered. Their short-distance generation through penguin-like diagrams is obtained within the QCD external field formalism. Standard-model operator evolution exhibits a suppression of anomalous effects in K and B hadronic weak decays. A genuine set of dimension-eight Delta S = 1 operators is also displayed.