K0S and Λ0 production studies in pp¯ collisions at √(s)=1800 and 630 GeV

We present a study of the production of K_S⁰ and Λ⁰ in inelastic p pmacr collisions at s=1800 and 630 GeV using data collected by the CDF experiment at the Fermilab Tevatron. Analyses of K_S⁰ and Λ⁰ multiplicity and transverse momentum distributions, as well as of the dependencies of the average number and ⟨p_T⟩ of K_S⁰ and Λ⁰ on charged particle multiplicity, are reported. Systematic comparisons are performed for the full sample of inelastic collisions, and for the low and high momentum transfer subsamples, at the two energies. The p_T distributions extend above 8GeV/c, showing a ⟨p_T⟩ higher than previous measurements. The dependence of the mean K_S⁰(Λ⁰) p_T on the charged particle multiplicity for the three samples shows a behavior analogous to that of charged primary tracks.