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.

doi:doi:10.1007/s100520000443

EPJ

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 a.

Laboratoire de Physique des Particules (LAPP), IN²P³-CNRS, 74019 Annecy-le-Vieux Cedex, France

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 K⁰_S spectra in gluon-enriched jets and the ${\rm\Lambda}$ spectra in quark jets.

Student Conference in Optics and Photonics 2024
October 2-4, 2024
Barcelona, Spain

EPJ

Inclusive production of , , , and in two- and three-jet events from hadronic Z decays

Conference announcements

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