Anomalous gamma -> 3 pi amplitude in a bound-state approach

Details Anomalous gamma -> 3 pi amplitude in a bound-state approach Anomalous gamma -> 3 pi amplitude in a bound-state approach

1999-12-21

arxiv.org/abs/hep-ph/9912452v3

Phys.Lett.B478:127-136,2000

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 3 figures, corrected some typos, which makes this version identical to the published one in Phys.Lett. B478 (2000) 1

Scientific paper

10.1016/S0370-2693(00)00241-0

The form factor for the anomalous process gamma pi^+ -> pi^+ pi^0, 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.

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