Photoproduction of eta-prime-mesons from the Proton

Abstract

The presently available data for the reaction $\gamma p\to {\eta }^{\prime }p$ are analyzed in terms of a model in which the dominant production mechanism is the exchange of the vector mesons $\omega$ and $\rho$. To describe the data at photon energies close to the production threshold we introduce a resonance contribution due to the well established $S_{11}(1535)$ resonance. Finally we study the contributions due to nucleon exchange to the ${\eta }^{\prime }$ photoproduction and find, that those contributions can be seen at large angles in the differential cross section.

arXiv comment20 pages, 7 postscript figures

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