Predictions of QCD fragmentation models in e+e- annihilation up to {Mathematical expression} GeV

Journal article

Results on event and single particle characteristics are presented for the three most successful perturbative QCD+fragmentation models in the c.m. energy range 12.0≦W≦200 GeV. The models were optimised to describe the properties of the large sample of hadronic events obtained by TASSO at W=35 GeV. The energy evolution of the observables across the range spanned by the PETRA and PEP data, 12.0≦〈W〉≦41.5 GeV, is reasonably well described by all the models. However, for some quantities the predictions of the different models diverge at higher energies; distributions of observables are shown at c.m. energies of 93 and 200 GeV, where data are expected from the e+e- colliders currently under construction. The ability to describe simultaneously, with the same parameter values, hadronic event features both at PETRA/PEP and LEP/SLC energies will provide a severe test of the models. The effects of top quark production on the event properties are illustrated for a top mass of 60 GeV/c2. Predictions are given for the rates of multijet events up to W=200 GeV, where ≧4-jet events dominate the cross section and will form a background to events containing heavy states which decay into hadron jets. © 1988 Springer-Verlag.

Authors: Burrows, P

• Publisher: Springer-Verlag
• Journal: Zeitschrift für Physik C Particles and Fields
• Volume: 41
• Issue: 3
• Pages: 375-384
• Publication date: 1988-09-01
• DOI: 10.1007/BF01585621
• EISSN: 1434-6052
• ISSN: 0170-9739
• Language: English