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A two-pion exchange three-nucleon force based on a realistic pi-N interaction | | T.-Y. Saito
; J. Haidenbauer
; | | Date: |
29 Mar 2000 | | Journal: | Eur.Phys.J. A7 (2000) 559-571 | | Subject: | nucl-th | | Abstract: | The contribution of a $pi pi$-exchange three-body force to the three-nucleon binding energy is calculated in terms of a $pi N$ amplitude. The latter is based on a meson-theoretical model of $pi N$ interaction developed by the Jülich group. Similar to a previous study based on simple phenomenological $pi N$ potentials a very small effect of the resulting three-body force is found. Possible origins of the two-orders-of-magnitude descrepancy between the present result and the values obtained for the Tucson-Melbourne three-body force are investigated. Evidence is provided that this discrepancy is most likely due to strikingly different off-shell properties of the $pi N$ amplitudes underlying the two approaches. | | Source: | arXiv, nucl-th/0003064 | | Services: | Forum | Review | PDF | Favorites | |
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