Kaon scattering from C and Ca at 800 MeV/c

Results from K^± elastic and inelastic scattering from ¹²C and ⁴⁰Ca are reported. The data were all taken at an incident momentum of 800 MeV/c over an angular range from 2^∘{} to 38^∘{}. The elastic data are compared to first-order optical model calculations in coordinate and momentum space; good qualitative agreement is obtained. The inelastic data (from ¹²C only) are compared to distorted-wave Born approximation calculations, and good agreement is found if "realistic" inelastic transition densities are used. Although a first-order optical potential description does not describe the data fully, there are strong indications of the increased penetrability of K⁺ over K^- in this energy range.NUCLEAR REACTIONS ¹²C(K^±,K^±)¹²C, ⁴⁰Ca(K^±,K^±)⁴⁰Ca, $E=442$ MeV (800 MeV/c), measured σ(θ) for elastic and inelastic scattering, compared to optical model and DWBA calculations, deduced optical potential parameters; θ=2^∘-38^∘, Δθ=1^∘.