Measurement of inclusive jet production in deep-inelastic scattering at high Q**2 and determination of the strong coupling

Inclusive jet production is studied in neutral current deep-inelastic positron–proton scattering at large four momentum transfer squared Q 2 > 150 GeV 2 with the H1 detector at HERA. Single and double differential inclusive jet cross sections are measured as a function of Q 2 and of the transverse energy E T of the jets in the Breit frame. The measurements are found to be well described by calculations at next-to-leading order in perturbative QCD. The running of the strong coupling is demonstrated and the value of α s ( M Z ) is determined. The ratio of the inclusive jet cross section to the inclusive neutral current cross section is also measured and used to extract a precise value for α s ( M Z ) = 0.1193 ± 0.0014 ( exp. ) −0.0030 +0.0047 ( th. ) ± 0.0016 ( pdf ) .

Note:

21 pages, 7 figures, submitted to Phys. Lett. B

electron p: colliding beams
electron p: deep inelastic scattering
neutral current
momentum transfer: high
jet: electroproduction
kinematics: Breit frame
differential cross section: momentum transfer
transverse energy: dependence
quantum chromodynamics: perturbation theory
strong interaction: coupling constant

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Figures(10)

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