Inclusive Jet Production in Photon-Photon Collisions at sqrt(s_ee) from 189 to 209 GeV

TL;DR

This paper measures inclusive jet production in photon-photon collisions at LEP energies, comparing experimental data with next-to-leading order perturbative QCD predictions to test theoretical models of strong interactions.

Contribution

It provides the first detailed measurement of inclusive jet cross-sections in photon-photon collisions at energies from 189 to 209 GeV, using the kT jet algorithm.

Findings

Measured differential cross-sections as a function of jet transverse momentum.

Results are consistent with next-to-leading order perturbative QCD predictions.

Provides data for testing QCD in photon-induced processes.

Abstract

Inclusive jet production (e+e- -> e+e- +jet+X) is studied in collisions of quasi-real photons radiated by the LEP beams at e+e- centre-of-mass energies sqrt see from 189 to 209 GeV. Jets are reconstructed using the kp jet algorithm. The inclusive differential cross-section is measured as a function of the jet transverse momentum, ptjet, in the range 5 <ptjet < 40 GeV for pseudo-rapidities, etaj, in the range -1.5 < etaj < 1.5. The results are compared to predictions of perturbative QCD in next-to-leading order in the strong coupling constant.