Jet production in ep collisions at high Q2 and determination of αs

The production of jets is studied in deep-inelastic e±p scattering at large negative four momentum transfer squared 150 < Q2 < 15000 GeV2 using HERA data taken in 1999-2007, corresponding to an integrated luminosity of 395 pb-1. Inclusive jet, 2-jet and 3-jet cross sections, normalised to the neutral current deep-inelastic scattering cross sections, are measured as functions of Q2, jet transverse momentum and proton momentum fraction. The measurements are well described by perturbative QCD calculations at next-to-leading order corrected for hadronisation effects. The strong coupling as determined from these measurements is αs(MZ) = 0.1168 ± 0.0007 (exp.) +0.0046-0.0030(th.) ± 0.0016 (PDF). (orig.)