Rescattering Model Applied toY*Production

The production angular distributions for ${Y_1}^{*}\mathrm{}\left(1385\right)\mathrm{}$, ${Y_0}^{*}\mathrm{}\left(1520\right)\mathrm{}$, and ${Y_1}^{*}\mathrm{}\left(1660\right)\mathrm{}$ in $K^{-}-p$ scattering are characterized by forward and backward peakings. As the single-particle-exchange model is unable to account for these features, we have attempted to explain them by considering rescattering square diagrams. We find that the use of a coincident-pole method leads to a simple prescription for evaluating the production angular distributions. Our results show agreement with the observed data when spin-parity assignments are ${\frac{3}{2}}^{+}$ for ${Y_1}^{*}\mathrm{}\left(1385\right)\mathrm{}$ and ${\frac{3}{2}}^{-}$ for $Y^{*}\mathrm{}(1520,1660)\mathrm{}$.