The ω – φ mixing and processes φ → π0[π+π−, l+l−], e+e− → φπ

Abstract

We present a study of ω(782) and φ (1020) mesons mixing in the framework of the chiral Nambu–Jona-Lasinio model. The decay φ → π0γ is considered as a basic process to determine mixing angle. The width of the decay φ → 3π and the cross-section of the process e+e− → π0φ are calculated in the satisfactory agreement with experimental data. A predictions for semileptonic decays φ → π0[e+e−, μ+μ−] are given.