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.

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

BIRSA, RENATO;BRADAMANTE, FRANCO;BRESSAN, Andrea;DUIC, VENICIO;ELIA, CARMINE;LEVORATO, STEFANO;Makke, Nour;MARTIN, ANNA;SBRIZZAI, GIULIO;SCHIAVON, PAOLO;SOZZI, FEDERICA;TESSARO, SUSANNA;
2013-01-01

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.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11368/2733694
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