The pion₀ to gamma gamma decay and the chiral anomaly in the quark-composites approach to QCD
classification
✦ hep-lat
keywords
actionanomalyapproachchiraldecayeffectivegammapion
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We evaluate the pion_0 into two gammas decay amplitude by an effective action derived from QCD in the quark composites approach, getting the standard value. We also verify that our effective action correctly reproduces the chiral anomaly.
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