Parities ofK-Hyperon Pairs

The possibility of determining the relative parity of $K$-hyperon pairs by measurements of reactions of the type $\pi (or K)+p\to K(or \pi )+\mathrm{hyperon}$ is investigated. If the protons are polarized in a direction perpendicular to the incident meson beam, it is shown that measurements of the correlation between the proton spin direction and the direction of the meson from the hyperon decay are capable of determining the parity unambiguously, provided that the $K$ spin is zero and the hyperon spin is known. Several alternate paritydetermining experiments that do not require polarized proton targets are discussed; these experiments are all quite difficult, however.