Vector meson angular distributions in proton-proton collisions

The resonance model is used to analyze the ω- and ϕ-meson angular distributions in proton-proton collisions at √s=2.83 and 2.98 GeV. The assumption of dominant contributions from N^*(1720)3/2⁺ and N^*(1900)3/2⁺ resonances which both have, according to the πN scattering multichannel partial-wave analysis and∕or quark models predictions, dominant p_1∕2 Nω decay modes yields the right pattern of the ω angular distribution at √s=2.83 GeV. The angular distribution at √s=2.98 GeV can be reproduced assuming the dominance of N^*(2000)5/2⁺ and N^*(1900)3/2⁺. The experimental ϕ-meson angular distributions do not show any asymmetry which requires the existence of a massive negative-parity spin-half resonance. This resonance could be identified with the N^*(2090)1/2⁻.