Measurement of leading proton and neutron production in deep-inelastic scattering at HERA

被引:0
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作者
Adloff C. [34 ]
Anderson M. [22 ]
Andreev V. [25 ]
Andrieu B. [28 ]
Arkadov V. [35 ]
Arndt C. [11 ]
Ayyaz I. [29 ]
Babaev A. [24 ]
Bähr J. [35 ]
Baranov P. [25 ]
Barrelet E. [29 ]
Bartel W. [11 ]
Bassler U. [29 ]
Bate P. [22 ]
Beck M. [13 ]
Beglarian A. [11 ,40 ]
Behnke O. [11 ]
Behrend H.-J. [11 ]
Beier C. [15 ]
Belousov A. [25 ]
Berger Ch. [1 ]
Bernardi G. [29 ]
Berndt T. [15 ]
Bertrand-Coremans G. [4 ]
Biddulph P. [22 ]
Bizot J.C. [27 ]
Boudry V. [28 ]
Braunschweig W. [1 ]
Brisson V. [27 ]
Brown D.P. [22 ]
Brückner W. [13 ]
Bruel P. [28 ]
Bruncko D. [17 ]
Bürger J. [11 ]
Büsser F.W. [12 ]
Buniatian A. [32 ]
Burke S. [18 ]
Buschhorn G. [26 ]
Calvet D. [23 ]
Campbell A.J. [11 ]
Carli T. [26 ]
Chabert E. [23 ]
Charlet M. [4 ]
Clarke D. [5 ]
Clerbaux B. [4 ]
Cocks S. [19 ]
Contreras J.G. [8 ]
Cormack C. [19 ]
Coughlan J.A. [5 ]
Cousinou M.-C. [23 ]
机构
[1] I. Physikalisches Institut der RWTH, Aachen
[2] III. Physikalisches Institut der RWTH, Aachen
[3] School of Physics and Space Research, University of Birmingham, Birmingham
[4] Inter-University Institute for High Energies ULB-VUB, Universitaire Instelling Antwerpen, Brussels, Wilrijk
[5] Rutherford Appleton Laboratory, Chilton, Didcot
[6] Institute for Nuclear Physics, Cracow
[7] Physics Department and IIRPA, University of California, Davis, CA
[8] Institut für Physik, Universität Dortmund, Dortmund
[9] Joint Institute for Nuclear Research, Dubna
[10] DSM/DAPNIA, CEA/Saclay, Gif-sur-Yvette
[11] DESY, Hamburg
[12] II. Institut für Experimentalphysik, Universität Hamburg, Hamburg
[13] Max-Planck-Institut für Kernphysik, Heidelberg
[14] Physikalisches Institut, Universität Heidelberg, Heidelberg
[15] Institut für Hochenergiephysik, Universität Heidelberg, Heidelberg
[16] Institut für experimentelle und angewandte Physik, Universität Kiel, Kiel
[17] Institute of Experimental Physics, Slovak Academy of Sciences, Košice
[18] School of Physics and Chemistry, University of Lancaster, Lancaster
[19] Department of Physics, University of Liverpool, Liverpool
[20] Queen Mary and Westfield College, London
[21] Physics Department, University of Lund, Lund
[22] Department of Physics and Astronomy, University of Manchester, Manchester
[23] CPPM, Université d'Aix-Marseille II, IN2P3-CNRS, Marseille
[24] Institute for Theoretical and Experimental Physics, Moscow
[25] Lebedev Physical Institute, Moscow
[26] Max-Planck-Institut für Physik, München
[27] LAL, Université de Paris-Sud, IN2P3-CNRS, Orsay
[28] LPNHE, Ecole Polytechnique, IN2P3-CNRS, Palaiseau
[29] LPNHE, Universités Paris VI and VII, IN2P3-CNRS, Paris
[30] Institute of Physics, Academy of Sciences of the Czech Republic, Praha
[31] Nuclear Center, Charles University, Praha
[32] INFN Roma 1 and Dipartimento di Fisica, Università Roma 3, Roma
[33] Paul Scherrer Institut, Villigen
[34] Fachbereich Physik, Bergische Universität Gesamthochschule Wuppertal, Wuppertal
[35] DESY, Institut für Hochenergiephysik, Zeuthen
[36] Institut für Teilchenphysik, ETH, Zürich
[37] Physik-Institut der Universität Zürich, Zürich
[38] Institut für Physik, Humboldt-Universität, Berlin
[39] Rechenzentrum, Bergische Universität Gesamthochschule Wuppertal, Wuppertal
[40] Institut für Experimentelle Kernphysik, Universität Karlsruhe, Karlsruhe
[41] Dept. Fís. Ap. CINVESTAV, Mérida, Yucatán
关键词
Proton Beam; Kinematic Region; Neutron Production; Neutron Data; Proton Beam Energy;
D O I
10.1007/s100529901072
中图分类号
学科分类号
摘要
Deep-inelastic scattering events with a leading baryon have been detected by the H1 experiment at HERA using a forward proton spectrometer and a forward neutron calorimeter. Semi-inclusive cross sections have been measured in the kinematic region 2 ≤ Q2 ≤ 50 GeV2, 6 × 10-5 ≤ x ≤ 6 × 10-3 and baryon pΤ ≤ 200 MeV, for events with a final-state proton with energy 580 ≤ E′ ≤ 740 GeV, or a neutron with energy E′ ≥ 160 GeV. The measurements are used to test production models and factorization hypotheses. A Regge model of leading baryon production which consists of pion, pomeron and secondary reggeon exchanges gives an acceptable description of both semi-inclusive cross sections in the region 0.7 ≤ E′/Ep ≤ 0.9, where Ep is the proton beam energy. The leading neutron data are used to estimate for the first time the structure function of the pion at small Bjorken-x.
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页码:587 / 602
页数:15
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