KS0andΛ0production studies inpp¯collisions ats=1800and 630 GeV

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Abstract

We present a study of the production of ${K}_{S}^{0}$ and ${\ensuremath{\Lambda}}^{0}$ in inelastic $p\overline{p}$ collisions at $\sqrt{s}=1800$ and 630 GeV using data collected by the CDF experiment at the Fermilab Tevatron. Analyses of ${K}_{S}^{0}$ and ${\ensuremath{\Lambda}}^{0}$ multiplicity and transverse momentum distributions, as well as of the dependencies of the average number and $⟨{p}_{T}⟩$ of ${K}_{S}^{0}$ and ${\ensuremath{\Lambda}}^{0}$ 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 $8\text{ }\text{ }\mathrm{GeV}/c$, showing a $⟨{p}_{T}⟩$ higher than previous measurements. The dependence of the mean ${K}_{S}^{0}({\ensuremath{\Lambda}}^{0})$ ${p}_{T}$ on the charged particle multiplicity for the three samples shows a behavior analogous to that of charged primary tracks.

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