Article révisé par les pairs
Résumé : Inclusive and semi-inclusive production of Λ and {Mathematical expression} in K+p interactions is studied at an incident momentum of 70 GeV/c. Cross sections and single particle distributions are presented and compared with data at lower energies. Scaling is observed between 32 and 70 GeV/c in the Feynman x variable in the target and the beam fragmentation regions for Λ and {Mathematical expression} inclusive production respectively. An increase of Λ ( {Mathematical expression}) production is observed in the beam (target) fragmentation regions, whereas the data at 70 and 32 GeV/c are reasonably close in the central region. The dependence of the Λ( {Mathematical expression}) polarization as a function of x is measured and found to be in general agreement with the results at 32 GeV/c. The (Λ {Mathematical expression}) pair production cross section increases significantly from 32 to 70 GeV/c. The Λ and {Mathematical expression} production associated with an identified proton is also studied. © 1981 Springer-Verlag.