Eta-N Final State Interaction in incoherent Photoproduction of Eta-mesons from the Deuteron near Threshold

Abstract

An analysis of incoherent photoproduction of $\eta$ mesons off the deuteron for photon energies from threshold to 800 MeV is presented. The dominant contribution, the $\gamma$N-$\eta$N amplitude, is described within an isobar model. Effects of the final state interactions in the $NN$ as well as the $\eta N$ systems are included employing models derived within the meson-exchange approach. It is found that their consideration is important. Specifically, due to an interference effect the influence of the $\eta N$ final state interaction is enhanced in the reaction $\gamma d\to np\eta$ close to threshold.

11 pages (LaTeX), 7 postscript figures

References in corpus (2)

• The $S_{11}-N$(1535) and $-N$(1650) Resonances in Meson-Baryon Unitarized Coupled Channel Chiral Perturbation Theory
• Incoherent Photoproduction of $\eta$-mesons from the Deuteron near Threshold

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