Anomalous γ→3π amplitude in a bound-state approach

The form factor for the anomalous process γπ+→π+π0, which is presently being measured at CEBAF, is calculated in the Schwinger–Dyson approach in conjunction with an impulse approximation. The form factors obtained by us are compared with the ones predicted by the simple constituent quark loop model, vector meson dominance and chiral perturbation theory, as well as the scarce already available data.