QCD anomalies in hadronic weak decays

Abstract

We consider the flavour-changing operators associated with the strong axial and trace anomalies. 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.

arXiv comment13 pages

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Cited by in corpus (4)

• On the nonperturbative charm effects in inclusive B -> X_c lνdecays
• ${\eta }_c$ mixing effects on charmonium and $B$ meson decays
• Okubo-Zweig-Iizuka-rule violation and B\to η^{(\prime)}K branching ratios
• Kaon mixing and the charm mass