Hyperon production with $\Sigma^{-}, \pi^{+}$ and neutrons in hyperon experiment WA89 at CERN

Inclusive differential cross sections for hyperon production in high- energy Sigma /sup -/, pi /sup -/ and neutron induced interactions are measured by the experiment WA89 at CERN. Secondary Sigma /sup -/ and pi /sup -/ beams with $9 average momenta of 345 GeV/c and a neutron beam of 260 GeV/c were produced by primary protons of 450 GeV/c from the CERN SPS. A new decay mode for Xi /sub 1690//sup 0/ is observed. A strong leading effect is seen for hyperons $9 produced by Sigma /sup -/. The influence of the target mass on hyperon cross section is explored by comparing reactions on copper and carbon nuclei. (21 refs).