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Originalpublikation
Garcilazo, H.; Mizutani, T.; Pea, M.T.; Sauer, P.U.: Does it make sense to talk about NΔ phase shifts? In: Physical Review C 42 (1990), Nr. 6, S. 2315-2321. DOI: https://doi.org/10.1103/PhysRevC.42.2315
The question of whether one can consistently define and extract nucleon-delta scattering parameters, phase shifts, and inelasticities from the partial-wave NN→NΔ amplitudes is discussed. We have studied the unitarity relation and identified the conditions under which the extraction of such quantities is meaningful. Then these conditions were tested in several coupled-channel models of the NN-NΔ system.
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