Inclusive jet production in photon–photon collisions at from 189 to 209 GeV

Inclusive jet production ( e + e − →e + e − +jet+X e + e − → e + e − + jet + X ) is studied in collisions of quasi-real photons radiated by the LEP beams at e + e − e + e − centre-of-mass energies s ee from 189 to 209 GeV. Jets are reconstructed using the k ⊥ k ⊥ jet algorithm. The inclusive differential cross-section is measured as a function of the jet transverse momentum, p T jet , in the range 5 p T jet 40 GeV for pseudo-rapidities, ηjet η jet , in the range −1.5 − 1.5 η jet 1.5 . The results are compared to predictions of perturbative QCD in next-to-leading order in the strong coupling constant.