Spin observables for pion production from pd collisions
L. Canton, G. Pisent, W. Schadow, J. P. Svenne
Abstract
We have calculated the proton analyzing power Ay0 of the pion-production reaction from pd collisions for one energy close to threshold and for another in the region of the Δ-resonance. A fair reproduction of the experimental data could be obtained in both cases with a model which includes isoscalar and isovector πN rescatterings in s waves, as well as the p-wave rescattering mechanisms mediated by the πNN and πN Δ vertices. For the analyzing power at threshold we found that the initial-state interaction (ISI) is also quite important.
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