Characteristics of CC-interactions at momentum 4,2 GeV/c per nucleon with Λ-hyperons and Ks0-mesons production in dependence on degree of collision centralities

The experimental data obtained with the JINR 2 m propane bubble chamber are used for the study of the influence of collision centrality on spectra of Λ-hyperons and Ks0-mesons produced in CC interactions at 4.2 A GeV/c. The multiplicity of participant protons with momenta larger than 300 MeV/c is taken as a measure of collision centrality. The characteristics of π-mesons and protons accompanying the strange particle production are also presented. The experimental data are compared with the prediction of the modified version of the FRITIOF model. It is shown that the strange particles are mainly produced in central and semi-central collisions. The average values of the kinematical characteristics of Ks0-mesons do not depend on the collision centrality. At the same time the average transverse momentum and emission angle of Λ-hyperons increase slowly with collision centrality. The angular anisotropy of the Λ-hyperons and Ks0-mesons (calculated with respect to the NN c.m. system) decreases with increasing collision centrality. The average transverse momentum of Ks0-mesons is 1.6 times larger than the momentum of π-mesons