A Dyson-Schwinger/Bethe-Salpeter calculation predicts the timelike gamma* pi -> pi pi form factor and its Primakoff cross section, finding a strong energy rise and weak angular dependence.
Investigation ofγ→3πChiral Anomaly During Pion Pair Production by Pions in the Nuclear Coulomb Field,
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Timelike form factor for the anomalous process $\gamma^\ast \pi \rightarrow \pi \pi$
A Dyson-Schwinger/Bethe-Salpeter calculation predicts the timelike gamma* pi -> pi pi form factor and its Primakoff cross section, finding a strong energy rise and weak angular dependence.