# Inclusive Production of $\pi^{0}, \eta, \eta'(958), K^0_s$ and $\Lambda$ in Two- and Three-Jet Events from Hadronic Z Decays

Abstract : The production rates and the inclusive cross sections of the isovector meson $\pi^0$, the isoscalar mesons $\eta$ and $\eta^\prime(958)$, the strange meson $\mathrm{K^0_S}$ and the $\Lambda$ 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 $\Lambda$ spectra in quark jets.
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Journal articles

Cited literature [12 references]

http://hal.in2p3.fr/in2p3-00005199
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Submitted on : Thursday, November 16, 2000 - 5:35:29 PM
Last modification on : Tuesday, April 20, 2021 - 12:00:04 PM

### Identifiers

• HAL Id : in2p3-00005199, version 1

### Citation

R. Barate, D. Decamp, P. Ghez, C. Goy, J P. Lees, et al.. Inclusive Production of $\pi^{0}, \eta, \eta'(958), K^0_s$ and $\Lambda$ in Two- and Three-Jet Events from Hadronic Z Decays. European Physical Journal C: Particles and Fields, Springer Verlag (Germany), 2000, 16, pp.613-634. ⟨in2p3-00005199⟩

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