S. Chekanov, Argonne National Laboratory
D. Krakauer, Argonne National Laboratory
S. Magill, Argonne National Laboratory
B. Musgrave, Universität Bonn
J. Repond, University of Bristol
R. Yoshida, Università della Calabria
Margarita C. K. Mattingly, Chonnam National UniversityFollow
P. Antonioli, Columbia University in the City of New York
G. Bari, Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences
M. Basile, AGH University of Science and Technology
L. Bellagamba, Uniwersytet Jagielloński w KrakowieFollow
D. Boscherini, Deutsches Elektronen-Synchrotron (DESY)
A. Bruni, Deutsches Elektronen-Synchrotron (DESY)
G. Bruni, Istituto Nazionale di Fisica Nucleare, Sezione di Firenze
G. Cara Romeo, Universität Freiburg im Breisgau
L. Cifarelli, University of Glasgow
F. Cindolo, University of the Aegean
A. Contin, Universität Hamburg
M. Corradi, Imperial College London
S. De Pasquale, Forschungszentrum Jülich (FZJ)
P. Giusti, High Energy Accelerator Research Organization, Institute of Particle and Nuclear Physics
G. Iacobucci, Ministry of Education and Science of the Republic of Kazakhstan
A. Margotti, Kyungpook National University
R. Nania, Universidad Autónoma de Madrid
F. Palmonari, Université McGill
A. Pesci, Meiji Gakuin University
G. Sartorelli, National Research Nuclear University MEPhI
A. Zichichi, Lomonosov Moscow State University
G. Aghuzumtsyan, Universiteit van Amsterdam
D. Bartsch, The Ohio State University
I. Brock, University of Oxford

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Inclusive jet differential cross sections have been measured in neutral current deep inelastic e +p scattering for boson virtualities Q 2 > 125 GeV 2. The data were taken using the ZEUS detector at HERA and correspond to an integrated luminosity of 38.6 pb -1. Jets were identified in the Breit frame using the longitudinally invariant k T cluster algorithm. Measurements of differential inclusive jet cross sections are presented as functions of jet transverse energy (E BT.jet), jet pseudorapidity and Q 2, for jets with E BT.jet > 8 GeV. Next-to-leading-order QCD calculations agree well with the measurements both at high Q 2 and high E BT.jet. The value of α s(M z), determined from an analysis of dσ/dQ 2 for Q 2 > 500 GeV 2, is α s(M Z=0.1212±0.0017 (stat.) +0.0023-0.0031 (syst.) +0.0028-0.0027(th.). © 2002 Elsevier Science B.V. All rights reserved.

Journal Title

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics





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