Study of the ReactionsK−p→K¯2πNfrom 1.2 to 1.7 BeV/c

This report summarizes the study of $\overline{K}2\pi N$ final states resulting from $K^{-}p$ interactions over the energy region from 1.2 to 1.7 BeV/c, with the emphasis on $\overline{K}\pi$ and $\overline{K}2\pi$ systems. It is shown that except for the 1520-MeV ${Y_0}^{*}$, no other resonance contributes markedly to these channels in this energy range. More specifically, there is no evidence for any $J^P=1^{+}$ meson of negative strangeness. The branching ratio of the $K^{*}$ into a $\kappa$ and a $\pi$ is shown to be less than 0.2% of its total rate. The cross section for the reaction $K^{-}p\to \kappa \pi N$ over this range of energies is shown to be less than or equal to a few microbarns.