Resonances in ηππ and ωω systems studied on the VES setup Original Research Article

The ηππ and ωω systems produced in the π−Be interactions with 37GeV/cπ− beam have been studied at the VES spectrometer. For the unnatural-parity exchange, the isoscalar channels demonstrate similar structures in ηπ−π+ and ωω final states, while the amplitudes with I = 1 have the same behaviour for ηπ+π−π0. The I = 0JPC = 2++ amplitudes show the signal of f2(1565) meson which decays to a2(1320)π− and ωω. The f2(1920) meson is observed in ωω. In the I = 0JPC = 4++ intensities there are signals from f4(2050) and f4(2330) mesons. The I = 1JPC = 3−− waves demonstrate the presence of p3(1690) meson in a2(1320)π and pη decay modes. 3−− waves at higher masses have complex behaviour and can be modelled by the further 3−− resonances.