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HK: Physik der Hadronen und Kerne

HK 46: Theory VII

HK 46.2: Gruppenbericht

Donnerstag, 11. März 2004, 17:00–17:30, D

Axial Anomalies in Strong Interactions — •B. Borasoy, N. Beisert, E. Lipartia, and R. Nißler — Institute for Theoretical Physics (T39), TU München, Germany

Phenomenological implications of axial anomalies in strong interactions are discussed within the framework of chiral effective field theory. Processes dominated by the axial anomalies are, e.g., the two-photon decays of π⁰, η, η′ or η, η′ → π⁺ π⁻ γ. Different approaches in the anomalous sector of the chiral theory are compared. Financial support of the Deutsche Forschungsgemeinschaft is gratefully acknowledged.