Note on isospin conservation in strange-particle production

This paper reports the investigation of the reaction π⁺+d→K+π+Λ⁰+p_s at a bombarding energy of 7 GeV/c. A recent compilation of data concerning π⁻+p→K+π+Λ⁰ showed a discrepancy in the decay $K^{*0}\left(890\right)\to K^{+}+{\pi }^{-}$ and K⁰+π⁰. The discrepancy was that too few of the latter decay modes were observed as compared with isospin predictions. This paper reports further investigation which shows a considerably smaller discrepancy than that previously found. The previously noted discrepancy must have been in part produced by a low scanning efficiency. The characteristics of these reactions are in other respects very similar to those observed at lower energies. The K*'s seem to be produced by natural-parity exchange.