Large samples of Lambda, Sigma(1385) and Xi(1321) hyperons produced in the deep-inelastic muon scattering off a (LiD)-Li-6 target were collected with the COMPASS experimental setup at CERN. The relative yields of Sigma(1385)(+), Sigma(1385)(-), Sigma(1385)(-), Sigma(1385)(+), Xi(1321)(-), and Xi(1321)(+) hyperons decaying into Lambda(Lambda)pi were measured. The ratios of heavy-hyperon to Lambda and heavy-antihyperon to Lambda 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
AMOROSO, Antonio;BALESTRA, Ferruccio;BERTINI, Raimondo Pietro;CHIOSSO, Michela;GARFAGNINI, Raffaello;GNESI, IVAN;GRASSO, Antonino;PIRAGINO, Guido;SOSIO, Stefano;
2013-01-01
Abstract
Large samples of Lambda, Sigma(1385) and Xi(1321) hyperons produced in the deep-inelastic muon scattering off a (LiD)-Li-6 target were collected with the COMPASS experimental setup at CERN. The relative yields of Sigma(1385)(+), Sigma(1385)(-), Sigma(1385)(-), Sigma(1385)(+), Xi(1321)(-), and Xi(1321)(+) hyperons decaying into Lambda(Lambda)pi were measured. The ratios of heavy-hyperon to Lambda and heavy-antihyperon to Lambda 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.File | Dimensione | Formato | |
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