Di-Jet production in photon-photon collisions at √see=161 and 172 GeV

OPAL Collaboration (1999) Di-Jet production in photon-photon collisions at √see=161 and 172 GeV. European Physical Journal C: Particles and Fields, 10 (4). pp. 547-561. ISSN 1434-6044

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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.

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Journal Article
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European Physical Journal C: Particles and Fields
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14 Nov 2016 10:30
Last Modified:
15 Sep 2023 00:30