Abstract
The OPE-$\ensuremath{\delta}$ prescription for approximating the absorptive one-pion-exchange (OPE) predictions for spin-density matrix elements has been applied to quasi-two-body reactions with final-state particles of arbitrary spins. Results indicate that the model is able to give the qualitative features of usual absorptive-one-pion-exchange (OPEA) models. Agreement between OPE-$\ensuremath{\delta}$ and OPEA predictions is good in general. Predictions of the two models for diagonal density matrix elements for the reaction $\ensuremath{\pi}+N\ensuremath{\rightarrow}{f}^{0}+N$ tend to disagree at larger angles.
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