Jet Production in ep Collisions at High Q**2 and Determination of alpha(s).

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.)±0.0016αs(MZ)=0.1168±0.0007(exp.)−0.0030+0.0046(th.)±0.0016 (PDF).