Study of Σ(1385) and Ξ(1321) hyperon and antihyperon production in deep inelastic muon scattering

Abstract

Large samples of Λ, Σ(1385) and Ξ(1321) hyperons produced in 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)^-, \barΣ(1385)^-, \barΣ(1385)^+, Ξ(1321)^-, and \barΞ(1321)^+ hyperons decaying into Λ(\barΛ)πwere measured. The heavy hyperon to Λand heavy antihyperon to \barΛ yield ratios 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.

13 pages, 4 figures and 3 tables, 1 Appendix with 3 figures. Version accepted by the Editor