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arXiv · hep-ph/9709404

Tests for the asymptotic behaviour of the gamma^* --> gamma pi^0 form factor

J. -M. Gerard·G. Lopez Castro
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Abstract

The gamma^* --> gamma pi^0 transition measured at different photon virtualities already provides us with a clean test for the behaviour of the pi^0 gamma^* gamma off-shell axial anomaly at large time-like squared momenta. It also allows reliable predictions for the branching ratio of heavy quarkonium decays into omega pi^0.

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J. -M. Gerard, G. Lopez Castro. 1998-01-21. Tests for the asymptotic behaviour of the gamma^* --> gamma pi^0 form factor. https://doi.org/10.1016/s0370-2693(98)00245-7

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