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Inclusive Σ+ and Σ0 production in hadronic Z decays

CollaborationWith : Achard, Pablo / Ambrosi, Giovanni / Bourquin, Maurice / Braccini, Saverio / Chamizo Llatas, Maria / Deglon, Patrick / Delmeire, Evelyne / Extermann, Pierre / Field, John / Kienzle, Maria-Novella / Muheim, Franz / Pohl, Martin / Produit, Nicolas / Sciarrino, Deborah
Published in Physics Letters. B. 2000, vol. 479, no. 1-3, p. 79-88
Abstract We report on measurements of the inclusive production rate of Σ+ and Σ0 baryons in hadronic Z decays collected with the L3 detector at LEP. The Σ+ baryons are detected through the decay Σ+→pπ0, while the Σ0 baryons are detected via the decay mode Σ0→Λγ. The average numbers of Σ+ and Σ0 per hadronic Z decay are measured to be: (NΣ+)+(NΣ-)=0.114±0.011stat.±0.009syst.; (NΣ0)+(NΣ0)=0.095±0.015stat.±0.013syst. These rates are found to be higher than the predictions from Monte Carlo hadronization models and analytical parameterizations of strange baryon production.
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L3 COLLABORATION. Inclusive Σ+ and Σ0 production in hadronic Z decays. In: Physics Letters. B, 2000, vol. 479, n° 1-3, p. 79-88. doi: 10.1016/S0370-2693(00)00369-5 https://archive-ouverte.unige.ch/unige:47335

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Deposited on : 2015-02-27

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