Inclusive production of , , , and 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
Received: 2 August 1999 / Published online: 6 July 2000 - © Springer-Verlag 2000
The production rates and the inclusive cross sections of the isovector meson , the isoscalar mesons and , the strange meson and the 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 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 K0S spectra in gluon-enriched jets and the spectra in quark jets.
Copyright Società Italiana di Fisica, Springer-Verlag 2000