Abstract

A Regge-pole model for $\mathrm{PN}\ensuremath{\rightarrow}{P}^{\ensuremath{'}}N$ and $\mathrm{PN}\ensuremath{\rightarrow}\mathrm{VN}$ is proposed. The model is based on the $L\ensuremath{-}S$ coupling scheme and describes the coupling of the particles involved in the reaction to the trajectory having definite quantum numbers ${J}^{\mathrm{PG}}$. The scheme determines the structure of the amplitude, which in turn characterizes the decay density matrix of the produced resonance. Kinematical factors and the threshold behavior are discussed on the basis of the analyticity assumption.

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