ω-Meson Photoproduction on Nucleons In the Near Threshold Region

The ω-meson photoproduction, γ+p → p+ω, is studied in the framework of a model, containing π-meson exchange in t-channel and nucleon-exchange in sand u-channels. Considering both ωNN -coupling constants in the region of time-like meson four momenta as the free parameters, we find different sets of solutions for these constants from the existing data on the t-dependence of the differential cross sections, dσ(γ + p → p+ ω)/dt, in the near threshold region Eγ ≤ 2 GeV. These sets of ωNN -coupling constants, corresponding to destructive and constructive π ⊗