Measurement of the p̄p→KSKSη cross section at beam momenta in the regions of 1.45 and 1.7 GeV/c

Abstract

The PS185 experiment at LEAR/CERN has investigated strangeness production in pp collisions with final states such as ΛΛ, Σ 0 Λ+c.c, Σ + Σ + , Σ − Σ − and K S K S . Results are presented from a study of about 32,000 K S K S X events obtained at several p momenta in the regions of 1.45 and 1.7 GeV/c. The pp → K S K S η cross sections extracted at these momenta constitute the first measurement of this reaction in flight and are broadly consistent with expectations of a phase-space extrapolation of branching ratios from annihilation at rest.