Abstract
Complex eigenphases and mixing parameters for elastic n-d scattering above the breakup threshold are calculated. Faddeev equations are solved precisely using the Bonn-B NN potential. We point out defects in existing N-d phase-shift analyses. Peculiar energy variations in the mixing parameter η3/2− are shown to have no effect on observables and are simply an artifact of the S-matrix parametrization. It is shown, that the n-d analyzing power A y depends most sensitively on the three eigenphases δ1/2 3/2/1, δ2/3 3/2/1, and δ5/2 3/2/1, which again are predominantly generated by the 3 P j NN force components. Therefore a determination of those eigenphases from experimental data would help to constrain the 3 P j NN forces.
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