Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Di-Jet production in photon-photon collisions at √see=161 and 172 GeV
AU - Kartvelishvili, Vakhtang
AU - OPAL Collaboration
PY - 1999/10
Y1 - 1999/10
N2 - Di-jet production is studied in collisions of quasi-real photons radiated by the LEP beams at e ++ e −− centre-of-mass energies s√ee=161see=161 and 172 GeV. The jets are reconstructed using a cone jet finding algorithm. The angular distributions of direct and double-resolved processes are measured and compared to the predictions of leading order and next-to-leading order perturbative QCD. The jet energy profiles are also studied. The inclusive di-jet cross-section is measured as a function of EjetTETjet and |ηjet||ηjet| and compared to next-to-leading order perturbative QCD calculations. The inclusive di-jet cross-section as a function of |ηjet||ηjet| is compared to the prediction of the leading order Monte Carlo generators PYTHIA and PHOJET. The Monte Carlo predictions are calculated with different parametrisations of the parton distributions of the photon. The influence of the ‘underlying event’ has been studied to reduce the model dependence of the predicted jet cross-sections from the Monte Carlo generators.
AB - Di-jet production is studied in collisions of quasi-real photons radiated by the LEP beams at e ++ e −− centre-of-mass energies s√ee=161see=161 and 172 GeV. The jets are reconstructed using a cone jet finding algorithm. The angular distributions of direct and double-resolved processes are measured and compared to the predictions of leading order and next-to-leading order perturbative QCD. The jet energy profiles are also studied. The inclusive di-jet cross-section is measured as a function of EjetTETjet and |ηjet||ηjet| and compared to next-to-leading order perturbative QCD calculations. The inclusive di-jet cross-section as a function of |ηjet||ηjet| is compared to the prediction of the leading order Monte Carlo generators PYTHIA and PHOJET. The Monte Carlo predictions are calculated with different parametrisations of the parton distributions of the photon. The influence of the ‘underlying event’ has been studied to reduce the model dependence of the predicted jet cross-sections from the Monte Carlo generators.
U2 - 10.1007/s100529900139
DO - 10.1007/s100529900139
M3 - Journal article
VL - 10
SP - 547
EP - 561
JO - European Physical Journal C: Particles and Fields
JF - European Physical Journal C: Particles and Fields
SN - 1434-6044
IS - 4
ER -