The $η^\prime$ Photoproduction off the Nucleon in the quark model

Details The $η^\prime$ Photoproduction off the Nucleon in the quark model The $η^\prime$ Photoproduction off the Nucleon in the quark model

1996-07-23

arxiv.org/abs/nucl-th/9607043v1

J.Phys.G23:1127-1132,1997

Physics

Nuclear Physics

Nuclear Theory

8 pages in latex form, plus 2 ps. figures can be obtained from the Author

Scientific paper

10.1088/0954-3899/23/9/012

The reaction $\gamma + p\to \eta^\prime + p$ is investigated in the quark model approach. The quark model predicts that the off-shell contributions from the resonance $S_{11}(1535)$ dominate the $\etap$ production in the threshold region. We find that the coulping constant $\alpha_{\etap NN}$ from the fit to a few total cross section data is small. The results of the total and differential cross sections are presented at different energies, which can be tested in the future experiments. If the future total cross data indeed show a resonance structure around 2 GeV suggested in a recent study, it would be an evidence of a non $qqq$ structure in its wavefunction.

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