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Inclusive production of \(\mathrm{\pi^0}\), \(\eta\), \({\rm \eta^{\prime}(958)}\), \({\rm K^0_{\rm S}}\) and \({\rm \Lambda}\) in two- and three-jet events from hadronic Z decays

  • The ALEPH Collaboration
  • R. Barate et al.
Experimental physics

Abstract.

The production rates and the inclusive cross sections of the isovector meson \({\rm \pi^0}\), the isoscalar mesons \(\eta\) and \({\rm \eta^{\prime}(958)}\), the strange meson \({\rm K^0_{\rm S}}\) and the \({\rm \Lambda}\) baryon have been measured as functions of scaled energy in hadronic events, two-jet events and each jet of three-jet events from hadronic Z decays and compared to Monte Carlo models. The analysis is based on 3.7 million hadronic events collected with the ALEPH detector at LEP at a centre-of-mass energy of \(\sqrt{s}=91.2\) GeV. The JETSET modelling of the gluon fragmentation into isoscalar mesons is found to be in agreement with the experimental results. HERWIG fails to describe the \({\mathrm{K^0_S}}\) spectra in gluon-enriched jets and the \({\rm \Lambda}\) spectra in quark jets.

Keywords

Production Rate Monte Carlo Model Inclusive Cross Section Inclusive Production Hadronic Event 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • The ALEPH Collaboration
  • R. Barate et al.
    • 1
  1. 1.Laboratoire de Physique des Particules (LAPP), IN2P3-CNRS, 74019 Annecy-le-Vieux Cedex, FranceFR

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