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Multiplicity structure of the hadronic final state in diffractive deep-inelastic scattering at HERA

  • C. Adloff
  • , M. Anderson
  • , V. Andreev
  • , B. Andrieu
  • , V. Arkadov
  • , I. Ayyaz
  • , A. Babaev
  • , J. Bähr
  • , J. Bán
  • , P. Baranov
  • , E. Barrelet
  • , R. Barschke
  • , W. Bartel
  • , U. Bassler
  • , P. Bate
  • , M. Beck
  • , A. Beglarian
  • , H. J. Behrend
  • , C. Beier
  • , A. Belousov
  • C. Berger, G. Bernardi, G. Bertrand-Coremans, P. Biddulph, J. C. Bizot, K. Borras, V. Boudry, A. Braemer, W. Braunschweig, V. Brisson, D. P. Brown, W. Brückner, P. Bruel, D. Bruncko, J. Bürger, F. W. Bässer, A. Buniatian, S. Burke, G. Buschhorn, D. Calvet, A. J. Campbell, T. Carli, E. Chabert, M. Charlet, D. Clarke, B. Clerbaux, S. Cocks, J. G. Contreras, C. Cormack, J. A. Coughlan, M. C. Cousinou, B. E. Cox, G. Cozzika, J. Cvach, J. B. Dainton, W. D. Dau, K. Daum, M. David, A. de Roeck, E. A. de Wolf, B. Delcourt, C. Diaconu, M. Dirkmann, P. Dixon, W. Dlugosz, K. T. Donovan, J. D. Dowell, A. Droutskoi, J. Ebert, G. Eckerlin, D. Eckstein, V. Efremenko, S. Egli, R. Eichler, F. Eisele, E. Eisenhandler, E. Elsen, M. Enzenberger, M. Erdmann, A. B. Fahr, L. Favart, A. Fedotov, R. Felst, J. Feltesse, J. Ferencei, F. Ferrarotto, K. Flamm, M. Fleischer, G. Flugge, A. Fomenko, J. Formánek, J. M. Foster, G. Franke, E. Gabathuler, K. Gabathuler, F. Gaede, J. Garvey, J. Gayler, M. Gebauer, R. Gerhards, A. Glazov, L. Goerlich, N. Gogitidze, M. Goldberg, I. Gorelov, C. Grab, H. Grässler, T. Greenshaw, R. K. Griffiths, G. Grindhammer, C. Gruber, T. Hadig, D. Haidt, L. Hajduk, T. Haller, M. Hampel, V. Haustein, W. J. Haynes, B. Heinemann, G. Heinzelmann, R. C.W. Henderson, S. Hengstmann, H. Henschel, R. Heremans, I. Herynek, K. Hewitt, K. H. Hiller, C. D. Hilton, J. Hladký, D. Hoffmann, T. Holtom, R. Horisberger, V. L. Hudgson, M. Ibbotson, C. Işsever, H. Itterbeck, M. Jacquet, M. Jaffre, D. M. Jansen, L. Jonsson, D. P. Johnson, H. Jung, M. Kander, D. Kant, U. Kathage, J. Katzy, H. H. Kaufmann, O. Kaufmann, M. Kausch, I. R. Kenyon, S. Kermiche, C. Keuker, C. Kiesling, M. Klein, C. Kleinwort, G. Knies, J. H. Kähne, H. Kolanoski, S. D. Kolya, V. Korbel, P. Kostka, S. K. Kotelnikov, T. Krämerkämper, M. W. Krasny, H. Krehbiel, D. Krücker, A. Käpper, H. Käster, M. Kuhlen, T. Kurča, B. Laforge, R. Lahmann, M. P.J. Landon, W. Lange, U. Langenegger, A. Lebedev, M. Lehmann, F. Lehner, V. Lemaitre, S. Levonian, M. Lindstroem, B. List, G. Lobo, V. Lubimov, D. Lüke, L. Lytkin, N. Magnussen, H. Mahlke-Kräger, E. Malinovski, R. Maraček, P. Marage, J. Marks, R. Marshall, G. Martin, R. Martin, H. U. Martyn, J. Martyniak, S. J. Maxfield, S. J. McMahon, T. R. McMahon, A. Mehta, K. Meier, P. Merkel, F. Metlica, A. Meyer, H. Meyer, J. Meyer, P. O. Meyer, A. Migliori, S. Mikocki, D. Milstead, J. Moeck, R. Mohr, S. Mohrdieck, F. Moreau, J. V. Morris, E. Mroczko, D. Müller, K. Müller, P. Murín, V. Nagovizin, B. Naroska, T. Naumann, I. Négri, P. R. Newman, D. Newton, H. K. Nguyen, T. C. Nicholls, F. Niebergall, C. Niebuhr, C. Niedzballa, H. Niggli, O. Nix, G. Nowak, T. Nunnemann, H. Oberlack, J. E. Olsson, D. Ozerov, P. Palmen, E. Panaro, A. Panitch, C. Pascaud, S. Passaggio, G. D. Patel, H. Pawletta, E. Peppel, E. Perez, J. P. Phillips, A. Pieuchot, D. Pitzl, R. Poschl, G. Pope, B. Povh, K. Rabbertz, P. Reimer, B. Reisert, H. Rick, S. Riess, E. Rizvi, P. Robmann, R. Roosen, K. Rosenbauer, A. Rostovtsev, F. Rouse, C. Royon, S. Rusakov, K. Rybicki, D. P.C. Sankey, P. Schacht, J. Scheins, S. Schiek, S. Schleif, P. Schleper, D. Schmidt, G. Schmidt, L. Schoeffel, V. Schroder, H. C. Schultz-Coulon, B. Schwab, F. Sefkow, A. Semenov, V. Shekelyan, I. Sheviakov, L. N. Shtarkov, G. Siegmon, U. Siewert, Y. Sirois, I. O. Skillicorn, T. Sloan, P. Smirnov, M. Smith, V. Solochenko, Y. Soloviev, A. Specka, J. Spiekermann, H. Spitzer, F. Squinabol, P. Steffen, R. Steinberg, J. Steinhart, B. Stella, A. Stellberger, J. Stiewe, U. Straumann, W. Struczinski, J. P. Sutton, M. Swart, S. Tapprogge, M. Taševský, V. Tchernyshov, S. Tchetchelnitski, J. Theissen, G. Thompson, P. D. Thompson, N. Tobien, R. Todenhagen, P. Truäl, G. Tsipolitis, J. Turnau, E. Tzamariudaki, S. Udluft, A. Usik, S. Valkár, A. Valkárová, C. Vallée, P. van Esch, P. van Mechelen, Y. Vazdik, G. Villet, K. Wacker, R. Wallny, T. Walter, B. Waugh, G. Weber, M. Weber, D. Wegener, A. Wegner, T. Wengler, M. Werner, L. R. West, S. Wiesand, T. Wilksen, S. Willard, M. Winde, G. G. Winter, C. Wittek, E. Wittmann, M. Wobisch, H. Wollatz, E. Wünsch, J. Žáček, J. Zálešák, Z. Zhang, A. Zhokin, P. Zini, F. Zomer, J. Zsembery, M. zurNedden
  • Bergische Universität Gesamthochschule Wuppertal
  • University of Manchester
  • P.N. Lebedev Physical Institute of the Russian Academy of Sciences
  • c/o DESY
  • Universités Paris VI and VII
  • Institute for Theoretical and Experimental Physics
  • Slovak Academy of Sciences
  • Max-Planck-Institut für Kernphysik
  • Yerevan Physics Institute
  • University of Heidelberg
  • RWTH Aachen University
  • Inter-University Institute for High Energies ULB-VUB
  • Laboratoire de l'Accélérateur Linéaire
  • University of Dortmund
  • Universität Hamburg
  • University Roma Tre
  • Lancaster University
  • Max-Planck-Institut für Physik
  • Aix-Marseille Université
  • CCLRC Rutherford Appleton Laboratory
  • University of Liverpool
  • Institut Pierre Simon Laplace, CNRS and CEA
  • Institute of Physics of the Czech Academy of Sciences
  • Christian-Albrechts-University Kiel
  • Queen Mary University of London
  • University of California, Davis
  • University of Birmingham
  • Physik-Institut der Universität Zürich
  • ETH Zurich
  • Charles University
  • Paul Scherrer Institut
  • Institute for Nuclear Physics
  • Lund University
  • Humboldt-Universität zu Berlin
  • University of Glasgow

Résultats de recherche: Contribution à un journalArticleRevue par des pairs

28 Citations (Scopus)

Résumé

The multiplicity structure of the hadronic system X produced in deep-inelastic processes at HERA of the type ep → eXY, where Y is a hadronic system with mass MY < 1.6 GeV and where the squared momentum transfer at the pY vertex, t, is limited to \t\ < 1 GeV2, is studied as a function of the invariant mass Mx of the system X. Results are presented on multiplicity distributions and multiplicity moments, rapidity spectra and forward-backward correlations in the centre-of-mass system of X. The data are compared to results in e+ e- annihilation, fixed-target lepton-nucleon collisions, hadro-produced diffractive final states and to non-diffractive hadron-hadron collisions. The comparison suggests a production mechanism of virtual photon dissociation which involves a mixture of partonic states and a significant gluon content. The data are well described by a model, based on a QCD-Regge analysis of the diffractive structure function, which assumes a large hard gluonic component of the colourless exchange at low Q2. A model with soft colour interactions is also successful. a Supported by the Bundesministerium für Bildung, Wissenschaft, Forschung und Technologie, FRG, under contract numbers 7AC17P, 7AC47P, 7DO55P, 7HH17I, 7HH27P, 7HD17P, 7HD27P, 7KI17I, 6MP17I and 7WT87P b Supported by the UK Particle Physics and Astronomy Research Council, and formerly by the UK Science and Engineering Research Council c Supported by PNRS-NFWO, IISN-IIKW.

langue originaleAnglais
Pages (de - à)439-452
Nombre de pages14
journalEuropean Physical Journal C
Volume5
Numéro de publication3
Les DOIs
étatPublié - 1 janv. 1998

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