Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2001-07-03
Phys.Lett. B516 (2001) 257-263
Physics
High Energy Physics
High Energy Physics - Experiment
10 pages, 6 figures, LaTeX, less figures to save space, adapted text
Scientific paper
10.1016/S0370-2693(01)00958-3
The PS185 experiment at LEAR/CERN has investigated strangeness production in antiproton-proton collisions with final states such as $\overline{\Lambda} \Lambda$, $\overline{\Sigma}^0 \Lambda + c.c$, $\overline{\Sigma^+} \Sigma^+$, $\overline{\Sigma^-} \Sigma^-$ and $K_S K_S$. Results are presented from a study of about 32,000 {$K_S K_S X$} events obtained at several antiproton momenta in the regions of 1.45 and 1.7 GeV/c. The $\overline{p} p \to K_S K_S \eta$ 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.
Barnes David P.
Bunker Bruce
Dennert H.
Eisenstein R. A.
Eyrich W.
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