Predictions of {QCD} Fragmentation Models in Annihilation Up to -{GeV}
Aug, 198832 pages
Published in:
- Z.Phys.C 41 (1988) 375
DOI:
Report number:
- OXFORD-NP-43-88,
- DESY-88-122
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Abstract: (Springer)
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 atW=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 thee+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 toW=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.- ELECTRON POSITRON: ANNIHILATION
- ANNIHILATION: ELECTRON POSITRON
- HADRON: ELECTROPRODUCTION
- ELECTROPRODUCTION: HADRON
- JET: ELECTROPRODUCTION
- ELECTROPRODUCTION: JET
- EVENT SHAPE ANALYSIS
- TRANSVERSE MOMENTUM: SPECTRUM
- SPECTRUM: TRANSVERSE MOMENTUM
- CHARGED PARTICLE: MULTIPLICITY
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