Photoproduction of eta-prime-mesons from the Proton

Abstract

The presently available data for the reaction ${\hat{I}}^{3}p\to \hat{I}{\cdot }^{\prime }p$ are analyzed in terms of a model in which the dominant production mechanism is the exchange of the vector mesons $\ddot{I}‰$ and $\ddot{I}$. 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 $\hat{I}{\cdot }^{\prime }$ photoproduction and find, that those contributions can be seen at large angles in the differential cross section.

20 pages, 7 postscript figures