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Low-energy scattering and photoproduction of $eta$-mesons on three-body nuclei | | A. Fix
; H. Arenhoevel
; | | Date: |
19 Feb 2003 | | Subject: | nucl-th | | Abstract: | The optical potential approach for low-energy scattering of $eta$-mesons on three-body nuclei is compared to an exact treatment of the $eta 3N$ system using four-body scattering theory with separable interactions in s-waves only. The higher-order terms including the interaction of the struck nucleon with the surrounding nuclear medium and virtual target excitations in between successive $eta$-scatterings are found to cause important corrections. Effects of final state interaction in $eta$-photoproduction on $^3$H and $^3$He are also studied and sizable contributions beyond the optical model approach are found. | | Source: | arXiv, nucl-th/0302050 | | Services: | Forum | Review | PDF | Favorites | |
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