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Study of heavy hyperons production in DIS at COMPASS

  • Session 2. Spin in Hadronic Reactions
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Abstract

Samples of Λ and \(\bar \Lambda\) hyperons produced in deep-inelastic muon scattering off 6LiD target were collected with the COMPASS experimental setup at CERN. The relative yields of Σ-(1385), \(\bar \Sigma ^ - (1385)\), \(\bar \Sigma ^ + (1385)\), Ξ−(1321), and \(\bar \Xi ^ + (1321)\) hyperons decaying into the \(\Lambda \left( {\bar \Lambda } \right)\pi\) were measured. The yield ratios of heavy hyperons to Λ were found to be in the range 3.8%–5.6% with a precision of about 10%. The experimental values are used to tune the parameters of the LEPTO Monte-Carlo generator relevant for strange particle production.

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Authors and Affiliations

  1. Joint Institute for Nuclear Research, Dubna, 141980, Russia

    N. Rossiyskaya

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  1. N. Rossiyskaya
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COMPASS Collaboration

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The article is published in the original.

In the following the notation for Σ−(1385) and Ξ−(1321) will be used without indicating mass values, and with “*” symbol for Σ− (1385) to indicate the resonance nature of these particles.

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Rossiyskaya, N., COMPASS Collaboration. Study of heavy hyperons production in DIS at COMPASS. Phys. Part. Nuclei 45, 113–116 (2014). https://doi.org/10.1134/S1063779614010870

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