Λ and Ξ− production in proton‐tungsten interactions at 200 GeV/c per nucleon

The primary aim of the WA85 experiment is the study of strangeand multistrange baryonand anti‐ baryonproduction. Particles are detected in the kinematic window of central rapidity and pT≳1.0 GeV/c. Results on the production of Λ, Λ,Ξ− and Ξ− hyperonsin proton‐ tungsteninteractions from the 1990 run are presented and compared with the sulphur‐ tungstendata.