Search

A study has been made of the production of hyperfragments by the interactions of 800-MeV/c K- mesons in nuclear emulsion. The frequency of production, estimated to be 5.3±0.3%, is about the same as for K- mesons at rest. The hyperfragments are emitted predominantly in the forward direction and the ratio of nonmesonic to mesonic decays has been found to be 11.5±0.6, much greater than for K- mesons at rest. The proportion of hyperfragments of short range (range in emulsion

Low-energy K/sup -/-p elastic scattering events in bubble chambers and emulsions are studied in order to investigate the possibility of a peak at approximately 30 Mev. The results indicate that the scattering cross section is increasing in the region of lowest K/sup -/ meson momentum and that there is only approximately 1O% probability that the cross section will flatten off at momenta lower than 120 Mev/c. Possible explanations are offened for the cross-section flattening observed in earlier emulsion experiments. (D.L.C.)