Measurements of K+ p elastic scattering differential cross sections in the incident momentum range 1368 to 2259 MeV/c

Measurements of complete angular distributions of elastic K+ p scattering at closely spaced incident momenta from 1368 to 2259 MeV/c are presented and discussed. A PDP-8 computer controlled system of scintillation counters and core-readout wire spark chambers was used for the detection of elastic events. Diffractive behaviour is already present at the lowest measured momentum and becomes more prominent as the incident momentum increases. An expansion of the angular distributions in terms of Legendre polynomials shows no marked structure of the expansion coefficients as functions of the incident momentum. Our measurements can be adequately described by a number of existing phase shift solutions within 5% of their published values. Also Regge pole extrapolations represent our data satisfactorily.