Isoscalar resonances with JPC=1 in e+e annihilation

Abstract
The analysis of the vector isoscalar excitations in the energy range between 1 and 2 GeV of the e+e annihilation is presented for the final states π+ππ0, ωπ+π, K+K, KS0K±π, and K*0Kπ++c.c. The effects of both resonance mixing and the successive opening of multiparticle channels, with energy-dependent partial widths, are taken into account. The work extends our previous analysis of vector isovector excitations and is aimed at comparing the existing data with the predictions of the qq¯ model. It is shown that this hypothesis does not contradict the data.