The NN final-state interaction in the helicity structure of image reaction Original Research Article

The influence of final-state NN-rescattering on the helicity structure of the View the MathML source reaction in the energy range from π-threshold up to 550 MeV has been investigated. The differential polarized cross-section difference for the parallel and antiparallel helicity states is predicted and compared with recent experimental data. It is shown that the effect of NN-rescattering is much less important in the polarized differential cross-section difference than in the previously studied unpolarized differential cross section. Furthermore, the contribution of View the MathML source to the spin asymmetry of the deuteron is explicitly evaluated over the region of the Δ(1232)-resonance with inclusion of NN-rescattering. The effect of NN final-state interaction is found to be much larger in the asymmetry than in the total cross section and leads to an appreciable reduction of the spin asymmetry in the Δ-region.