Reggeized model for η and η′ photoproduction -: art. no. 045202

A Reggeized model for eta and eta' photoproduction on the nucleon is presented. In this model, t-channel vector meson exchanges are described in. terms of Regge trajectories to comply with the correct high energy behavior. We compare this Reggeized model with an isobar model (eta-MAID), where the t-channel exchanges are described by rho and omega poles. Both models contain the same resonance contributions, and describe current gammap-->etap data up to E-gamma(lab)=2 GeV quite well, but only the Reggeized model can be successfully extended to higher energies. For the gammap-->eta'p reaction, the Reggeized model is found to be able to give a satisfactory description. For the differential cross section data from SAPHIR, we find that the observed linear forward rise in cos theta near E-gamma(lab)=1.6 GeV can be well described by the interference of an S-11 resonance and the Regge trajectory exchanges without any need for an additional P-wave resonance.