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The $eta NN$-system at low energy within a three-body approach | | A. Fix
; H. Arenhoevel
; | | Date: |
10 Apr 2001 | | Journal: | Nucl.Phys. A697 (2002) 277-302 | | Subject: | nucl-th | | Abstract: | The role of the $eta NN$-interaction is studied in the low energy regime in $eta$-deuteron reactions as well as in coherent and incoherent $eta$-photoproduction on the deuteron using a three-body model with separable two-body interactions. The three-body approach turns out to be quite essential in the most important lowest partial wave. Results are presented for differential and total cross sections as well as for the $eta$-meson spectrum. They differ significantly from those predicted by a simple rescattering model in which only first-order $eta N$- and $NN$-interactions in the final state are considered. The major features of the experimental data of $eta$-photoproduction in the near-threshold region are well reproduced. | | Source: | arXiv, nucl-th/0104032 | | Services: | Forum | Review | PDF | Favorites | |
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