Abstract
Jet and particle production have been studied in collisions of quasi-real photons collected during the LEP2 program. OPAL and DELPHI report good agreement of NLO perturbative QCD with the measured differential di-jet cross sections, which reach a mean transverse energy of the di-jet system of 25 GeV. L3, on the other hand, finds drastic disagreement of the same calculation with single jet production for transverse jet momenta larger than about 25 GeV. L3 observes similar disagreement between data and NLO QCD in their measurements of charged and neutral particle production at high transverse momenta of the particles. A recent measurement performed by DELPHI of the same quantities does not confirm this observation.
| Original language | English |
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| Pages (from-to) | 753-759 |
| Number of pages | 6 |
| Journal | Acta Physica Polonica B : Elementary Particle Physics, Nuclear Physics, Statistical Physics, Theory of Relativity, Field Theory |
| Volume | 37 |
| Issue number | 3 |
| Publication status | Published - Mar 2006 |