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Study of Sigma(1385) and Xi(1321) hyperon and antihyperon production in deep inelastic muon scattering
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arxiv 1304.0952 v2 pith:4PVHHVJU submitted 2013-04-03 hep-ex nucl-ex
Study of Sigma(1385) and Xi(1321) hyperon and antihyperon production in deep inelastic muon scattering
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Large samples of \Lambda, \Sigma(1385) and \Xi(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 \Sigma(1385)^+, \Sigma(1385)^-, \bar{\Sigma}(1385)^-, \bar{\Sigma}(1385)^+, \Xi(1321)^-, and \bar{\Xi}(1321)^+ hyperons decaying into \Lambda(\bar{\Lambda})\pi were measured. The heavy hyperon to \Lambda and heavy antihyperon to \bar{\Lambda} 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.
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