QUASI-ELASTIC K+-NUCLEUS SCATTERING

Quasielastic K+-nucleus scattering data at q=290, 390, and 480 MeV/c a re analyzed in a finite nucleus continuum random phase approximation f ramework, using a density-dependent particle-hole interaction. The rea ction mechanism is consistently treated according to Glauber theory, k eeping up to two-step inelastic processes. A good description of the d ata is achieved, also providing a useful constraint on the strength of the effective particle-hole interaction in the scalar-isoscalar chann el at intermediate momentum transfers. We find no evidence for the inc rease in the effective number of nucleons participating in the reactio n which has been reported in the literature.