Measuring the finite width and unitarity corrections to the phi omega mixing amplitude - art. no. 054005

It is shown that the phase of phi omega interference in the reaction e'e(-) --> pi(+)pi(-)pi(0) energies close to the phi(1020) peak can be calculated in a way that is practically independent of the model of phi omega mixing. The magnitude of the presently measured interference phase, still of poor accuracy, is in agreement with the predictions based on extending the omega (782) resonance tail from the peak position to the phi mass upon assuming t he omega --> rho pi --> 3 pi model. The calculated omega width at the phi m ass is about 200 MeV.