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Nucleon resonances in omega photoproduction

Yongseok Oh·Alexander I. Titov·T. -S. H. Lee
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Abstract

The role of the nucleon resonances ($N^*$) in $ω$ photoproduction is investigated by using the resonance parameters predicted by Capstick and Roberts [Phys. Rev. D {\bf 46}, 2864 (1992); {\bf 49}, 4570 (1994)]. In contrast with the previous investigations based on the ${SU}(6) \times {O}(3)$ limit of the constituent quark model, the employed $N^* \to γN$ and $N^* \to ωN$ amplitudes include the configuration mixing effects due to the residual quark-quark interactions. The contributions from the nucleon resonances are found to be significant relative to the non-resonant 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 the parity asymmetry and beam-target double asymmetry at forward scattering angles.

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Yongseok Oh, Alexander I. Titov, T. -S. H. Lee. 2000-11-13. Nucleon resonances in omega photoproduction. https://doi.org/10.1103/physrevc.63.025201

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