Study ofK−p→K¯NπReactions at 1.33GeVc

The reactions $K^{-}p\to \overline{K}N\pi$ at 1.33 $\frac{\mathrm{GeV}}{c}$ are found to be dominated by ${\overline{K}}^{*}\mathrm{}\left(890\right)N$ production. Some evidence is also found for $N^{*}\mathrm{}\left(1236\right)\mathrm{}\overline{K}$ and $Y_0^{}{}_{}{}^{*}\mathrm{}\left(1520\right)\mathrm{}\pi$ production. Slight amounts of $Y_1^{}{}_{}{}^{*}\mathrm{}\left(1765\right)\mathrm{}\pi$ are seen. An investigation of the angular distributions of events in the ${\overline{K}}^{*}\mathrm{}\left(890\right)\mathrm{}$ mass region was made. A backward peaking exists in the production angular distribution of ${\overline{K}}^{*-}p\to {\overline{K}}^0{\pi }^{-}p$. No evidence for this backward peaking is found in the other ${\overline{K}}^{*}N$ final states. Both production and the decay angular distributions of the ${\overline{K}}^{*}\mathrm{}\left(890\right)\mathrm{}$ indicate that the ${\overline{K}}^{*0\mathrm{}}n$ final state can be explained by an exchange of a pseudoscalar meson of small mass. In the ${\overline{K}}^{*-}p$ final states, the exchange of an isotopic spin-zero vector meson as well as a pseudoscalar meson explain the data.