The Monte Carlo event generator PHOKHARA, which simulates hadron and muon production at electron-positron colliders through radiative return, has been extended to final states with three pions. A model for the form factor based on generalized vector dominance has been employed, which is consistent with presently available experimental observations.
Czyz, Henryk Grzelinska, Agnieszka Kühn, Johann H. Rodrigo García, Germán Vicente 2006 Electron-positron annihilation into three pions and the radiative return European Physical Journal C 47 3 617 624
