About the consistency of OPEP in nucleon-nucleon potential models and data analyses phase shifts
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Abstract:
The current understanding of the NN force in terms of boson exchange predicts a dominance of OPEP for the long range part beyond 3 fm. The NN data are well reproduced with the Bonn, Nijmegen and Paris potentials. Independent of these model potentials are phase shift analyses from the VPI-Arndt and Nijmegen-de Swart groups. Using Gel`fand -Levitan and Marchenko inversion and Darboux-Crum-Krein transformations we can reproduce all features of potential models and in particular their OPEP tail with very high precision and radii r<15 fm. This confirmation of the analytic OPEP tail proves the validity of the inversion algorithms. This is important since we find that neither the Nijmegen phase shift analysis nor the SM94 and/or VZ40 Arndt PSA data imply OPEP in a clear and decisive form. From our analysis we conclude that OPEP is sufficient but not necessary to explanin present data.Keywords:
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