THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS
Abstract
Large samples of Λ, Σ(1385) and Ξ(1321) hyperons produced in the deep-inelastic muon scattering off a 6LiD target were collected with the COMPASS experimental setup at CERN. The relative yields of Σ(1385)+, Σ(1385)−, Σ ̄(1385)− , Σ ̄(1385)+ , Ξ(1321)−, and Ξ ̄(1321)+ hyperons decaying into Λ(Λ ̄)π were measured. The ratios of heavy-hyperon to Λ and heavy-antihyperon to Λ ̄ were found to be in the range 3.8 % to 5.6 % with a relative uncertainty of about 10 %. They were used to tune the parameters relevant for strange particle production of the LEPTO Monte Carlo generator.
