Pion-Hyperon Scattering andK−−pReactions

A brief survey is made of the consequences of the universal pion-baryon interaction on production of hyperons with pions. In particular, a pion-hyperon resonant scattering state similar to the $p_{\frac{3}{2}}$, $T=\frac{3}{2}$ pion-nucleon state should exist. Possible effects of this state are examined. It is found that the large low-energy $K^{-}-p$ cross sections cannot be associated with it. Other experiments are suggested in order to search for this state, especially $K^{-}-p$ reactions at higher energy and pion production in hyperon-nucleon scattering.