Nucleon resonances in omega photoproduction - art. no. 025201

The role of the nucleon resonances (N*) in omega photoproduction is investi gated by using the resonance parameters predicted by Capstick and Roberts [ Phys. Rev. D 46, 2864 (1992): 49, 4570 (1994)]. In contrast with the previo us investigations based on the SU(6)xO(3) limit of the constituent quark mo del, the employed N*-->gammaN and N*-->omegaN amplitudes include the config uration mixing effects due to the residual quark-quark interactions. The co ntributions from the nucleon resonances are found to be significant relativ e to the nonresonant amplitudes in changing the differential cross sections at large scattering angles and various spin observables. In particular, we suggest that a crucial test of our predictions can be made by measuring th e parity asymmetry and beam-target double asymmetry at forward scattering a ngles. The dominant contributions are found to be from N3/2(divided by)(191 0), a missing resonance, and N3/2(-)(1960) which is identified as the D-13( 2080) of the Particle Data Group.