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23 April 2024 |
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The three- and four-nucleon systems from chiral effective field theory | | E. Epelbaum
; H. Kamada
; A. Nogga
; H. Witala
; W. Glöckle
; Ulf-G. Mei{ss}ner
; | | Date: |
25 Jul 2000 | | Journal: | Phys.Rev.Lett. 86 (2001) 4787-4790 | | Subject: | nucl-th | | Abstract: | Recently developed chiral nucleon-nucleon (NN) forces at next-to-leading order (NLO) that describe NN phase shifts up to about 100 MeV fairly well have been applied to 3N and 4N systems. Faddeev-Yakubovsky equations have been solved rigorously. The chiral NLO forces depend on a momentum cut-off Lambda lying between 540-600 MeV/c. The resulting 3N and 4N binding energies are in the same range as found using standard NN potentials. In additon, low-energy 3N scattering observables are very well reproduced like for standard NN forces. Surprisingly, the long standing A_y-puzzle is resolved at NLO. The cut-off dependence of the scattering observables is rather mild. | | Source: | arXiv, nucl-th/0007057 | | Services: | Forum | Review | PDF | Favorites | |
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