Jet production in deep inelastic scattering for 120 < Q^2 < 3600 GeV^2 has been studied using data from an integrated luminosity of 3.2 pb^(-1) collected with the ZEUS detector at HERA. Jets are identified with the JADE algorithm. A cut on the angular distribution of parton emission in the y*-parton centre-of-mass system minimises the experimental and theoretical uncertainties in the determination of the jet rates. The jet rates, when compared to 0(alpha_s^2) perturbative QCD calculations, allow a precise determination of alpha_s(Q) in three Q^2 intervals. The values are consistent with a running of alpha_s(Q), as expected from QCD.
Measurement of α_s from jet rates in deep inelastic scattering at HERA
ANZIVINO, Giuseppina
1995
Abstract
Jet production in deep inelastic scattering for 120 < Q^2 < 3600 GeV^2 has been studied using data from an integrated luminosity of 3.2 pb^(-1) collected with the ZEUS detector at HERA. Jets are identified with the JADE algorithm. A cut on the angular distribution of parton emission in the y*-parton centre-of-mass system minimises the experimental and theoretical uncertainties in the determination of the jet rates. The jet rates, when compared to 0(alpha_s^2) perturbative QCD calculations, allow a precise determination of alpha_s(Q) in three Q^2 intervals. The values are consistent with a running of alpha_s(Q), as expected from QCD.File in questo prodotto:
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