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arXiv · hep-lat/0004019

The pion_0 to gamma gamma decay and the chiral anomaly in the quark-composites approach to QCD

Sergio Caracciolo·Fabrizio Palumbo
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Abstract

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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Sergio Caracciolo, Fabrizio Palumbo. 2000-04-21. The pion_0 to gamma gamma decay and the chiral anomaly in the quark-composites approach to QCD. https://arxiv.org/abs/hep-lat/0004019

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