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Low energy n+t scattering and the NN forces

F. Ciesielski·J. Carbonell·C. Gignoux
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Abstract

The Faddeev-Yakubovsky equations have been solved in configuration space for the four nucleon system. The n+t elastic cross section has been calculated using several realistic interactions and a phenomenological three-nucleon force. Special attention is devoted to the description of the observed resonant structure at $T_{lab}\approx 4$ MeV. In the present state of the calculations, the realistic NN interactions are unable to describe the energy region considered, i.e. n+t S- and P- waves. Whereas the inclusion of a three-nucleon force improves the zero energy region, the disagreement in the resonant peak remains. This failure contrasts with the results of a pure phenomenological model. The origin of this disagreement as well as the possible issues are discussed.

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F. Ciesielski, J. Carbonell, C. Gignoux. 1999-03-26. Low energy n+t scattering and the NN forces. https://doi.org/10.1016/s0370-2693(98)01501-9

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