Measurement of dijet photoproduction at high transverse energies at HERA

被引:0
作者
Breitweg J. [1 ]
Chekanov S. [1 ]
Derrick M. [1 ]
Krakauer D. [1 ]
Magill S. [1 ]
Musgrave B. [1 ]
Pellegrino A. [1 ]
Repond J. [1 ]
Stanek R. [1 ]
Yoshida R. [1 ]
Mattingly M.C.K. [2 ]
Abbiendi G. [3 ]
Anselmo F. [3 ]
Antonioli P. [3 ]
Bari G. [3 ]
Basile M. [3 ]
Bellagamba L. [3 ]
Boscherini D. [3 ,54 ]
Bruni A. [3 ]
Bruni G. [3 ]
Cara Romeo G. [3 ]
Castellini G. [3 ,55 ]
Cifarelli L. [3 ,56 ]
Cindolo F. [3 ]
Contin A. [3 ]
Coppola N. [3 ]
Corradi M. [3 ]
de Pasquale S. [3 ]
Giusti P. [3 ]
Iacobucci G. [3 ,54 ]
Laurenti G. [3 ]
Levi G. [3 ]
Margotti A. [3 ]
Massam T. [3 ]
Nania R. [3 ]
Palmonari F. [3 ]
Pesci A. [3 ]
Polini A. [3 ]
Sartorelli G. [3 ]
Zamora Garcia Y. [3 ]
Zichichi A. [3 ]
Amelung C. [4 ]
Bornheim A. [4 ]
Brock I. [4 ]
Coböken K. [4 ]
Crittenden J. [4 ]
Deffner R. [4 ]
Eckert M. [4 ]
Hartmann H. [4 ]
Heinloth K. [4 ]
机构
[1] Argonne National Laboratory, Argonne, IL
[2] Andrews University, Berrien Springs, MI
[3] University and INFN Bologna, Bologna
[4] Physikalisches Institut der Universität Bonn, Bonn
[5] H. H. Wills Physics Laboratory, University of Bristol, Bristol
[6] Calabria University, Physics Dept. and INFN, Cosenza
[7] Chonnam National University, Kwangju
[8] Columbia University, Nevis Labs., Irvington on Hudson, NY
[9] Inst. of Nuclear Physics, Cracow
[10] Faculty of Physics and Nuclear Techniques, Academy of Mining and Metallurgy, Cracow
[11] Jagellonian Univ., Dept. of Physics, Cracow
[12] Deutsches Elektronen-Synchrotron DESY, Hamburg
[13] DESY Zeuthen, Zeuthen
[14] University and INFN, Florence
[15] INFN, Laboratori Nazionali di Frascati, Frascati
[16] Fakultät für Physik der Universität Freiburg i. Br, Freiburg i. Br.
[17] Dept. of Physics and Astronomy, University of Glasgow, Glasgow
[18] Hamburg University, I. Institute of Exp. Physics, Hamburg
[19] Hamburg University, II. Institute of Exp. Physics, Hamburg
[20] Imperial College London, High Energy Nuclear Physics Group, London
[21] University of Iowa, Physics and Astronomy Dept., Iowa City
[22] Forschungszentrum Jülich, Institut für Kernphysik, Jülich
[23] Institute of Particle and Nuclear Studies, KEK, Tsukuba
[24] Korea University, Seoul
[25] Kyungpook National University, Taegu
[26] Univer. Autónoma Madrid, Depto de Física Teórica, Madrid
[27] McGill University, Dept. of Physics, Montréal, QC
[28] Meiji Gakuin University, Faculty of General Education, Yokohama
[29] Moscow Engineering Physics Institute, Moscow
[30] Moscow State University, Institute of Nuclear Physics, Moscow
[31] NIKHEF and University of Amsterdam, Amsterdam
[32] Ohio State University, Physics Department, Columbus, OH
[33] Department of Physics, University of Oxford, Oxford
[34] Dipartimento di Fisica dell'Università and INFN, Padova
[35] Pennsylvania State University, Dept. of Physics, University Park, PA
[36] Polytechnic University, Sagamihara
[37] Dipartimento di Fisica, Univ. 'La Sapienza' and INFN, Rome
[38] Rutherford Appleton Laboratory, Chilton, Didcot, Oxon
[39] University of California, Santa Cruz, CA
[40] Raymond and Beverly Sackler Faculty of Exact Sciences, School of Physics, Tel-Aviv University, Tel-Aviv
[41] Department of Physics, University of Tokyo, Tokyo
[42] Tokyo Metropolitan University, Dept. of Physics, Tokyo
[43] Università di Torino, Dipartimento di Fisica Sperimentale and INFN, Torino
[44] II Faculty of Sciences, Torino University and INFN, Alessandria
[45] University of Toronto, Dept. of Physics, Toronto, ON
[46] University College London, Physics and Astronomy Dept., London
[47] Warsaw University, Institute of Experimental Physics, Warsaw
[48] Institute for Nuclear Studies, Warsaw
[49] Weizmann Institute, Department of Particle Physics, Rehovot
[50] University of Wisconsin, Dept. of Physics, Madison, WI
关键词
D O I
10.1007/s100529900166
中图分类号
学科分类号
摘要
The cross section for dijet photoproduction at high transverse energies is presented as a function of the transverse energies and the pseudorapidities of the jets. The measurement is performed using a sample of ep-interactions corresponding to an integrated luminosity of 6.3 pb-1, recorded by the ZEUS detector. Jets are defined by applying a kT-clustering algorithm to the hadrons observed in the final state. The measured cross sections are compared to next-to-leading order QCD calculations. In a kinematic regime where theoretical uncertainties are expected to be small, the measured cross sections are higher than these calculations.
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页码:35 / 50
页数:15
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