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Diffractive photoproduction of J/ψ mesons with large momentum transfer at HERA

  • A. Aktas
  • , V. Andreev
  • , T. Anthonis
  • , A. Astvatsatourov
  • , A. Babaev
  • , S. Backovic
  • , J. Bähr
  • , P. Baranov
  • , E. Barrelet
  • , W. Bartel
  • , S. Baumgartner
  • , J. Becker
  • , M. Beckingham
  • , A. Beglarian
  • , O. Behnke
  • , O. Behrendt
  • , A. Belousov
  • , C. Berger
  • , T. Berndt
  • , J. C. Bizot
  • J. Böhme, M. O. Boenig, V. Boudry, J. Bracinik, W. Braunschweig, V. Brisson, H. B. Bröker, D. P. Brown, D. Bruncko, F. W. Büsser, A. Bunyatyan, A. Burrage, G. Buschhorn, L. Bystritskaya, A. J. Campbell, S. Caron, F. Cassol-Brunner, V. Chekelian, D. Clarke, C. Collard, J. G. Contreras, Y. R. Coppens, J. A. Coughlan, M. C. Cousinou, B. E. Cox, G. Cozzika, J. Cvach, J. B. Dainton, W. D. Dau, K. Daum, M. Davidsson, B. Delcourt, N. Delerue, R. Demirchyan, A. de Roeck, E. A. de Wolf, C. Diaconu, J. Dingfelder, P. Dixon, V. Dodonov, J. D. Dowell, A. Dubak, C. Duprel, G. Eckerlin, V. Efremenko, S. Egli, R. Eichler, F. Eisele, M. Ellerbrock, E. Elsen, M. Erdmann, W. Erdmann, P. J.W. Faulkner, L. Favart, A. Fedotov, R. Felst, J. Ferencei, S. Ferron, M. Fleischer, P. Fleischmann, Y. H. Fleming, G. Flucke, G. Flügge, A. Fomenko, I. Foresti, J. Formánek, G. Franke, G. Frising, E. Gabathuler, K. Gabathuler, J. Garvey, J. Gassner, J. Gayler, R. Gerhards, C. Gerlich, S. Ghazaryan, L. Goerlich, N. Gogitidze, S. Gorbounov, C. Grab, V. Grabski, H. Grässler, T. Greenshaw, G. Grindhammer, D. Haidt, L. Hajduk, J. Haller, B. Heinemann, G. Heinzelmann, R. C.W. Henderson, H. Henschel, O. Henshaw, R. Heremans, G. Herrera, I. Herynek, M. Hildebrandt, M. Hilgers, K. H. Hiller, J. Hladký, P. Höting, D. Hoffmann, R. Horisberger, A. Hovhannisyan, M. Ibbotson, M. Jacquet, L. Janauschek, X. Janssen, V. Jemanov, L. Jönsson, C. Johnson, D. P. Johnson, M. A.S. Jones, H. Jung, D. Kant, M. Kapichine, M. Karlsson, J. Katzy, F. Keil, N. Keller, J. Kennedy, I. R. Kenyon, C. Kiesling, M. Klein, C. Kleinwort, T. Kluge, G. Knies, B. Koblitz, S. D. Kolya, V. Korbel, P. Kostka, R. Koutouev, A. Koutov, J. Kroseberg, K. Krüger, J. Kueckens, T. Kuhr, M. P.J. Landon, W. Lange, T. Laštovicka, P. Laycock, A. Lebedev, B. Leißner, R. Lemrani, V. Lendermann, S. Levonian, B. List, E. Lobodzinska, N. Loktionova, R. Lopez-Fernandez, V. Lubimov, H. Lueders, S. Lüders, D. Lüke, L. Lytkin, A. Makankine, N. Maiden, E. Malinovski, S. Mangano, P. Marage, J. Marks, R. Marshall, H. U. Martyn, J. Martyniak, S. J. Maxfield, D. Meer, A. Mehta, K. Meier, A. B. Meyer, H. Meyer, J. Meyer, S. Michine, S. Mikocki, D. Milstead, S. Mohrdieck, F. Moreau, A. Morozov, J. V. Morris, K. Müller, P. Murín, V. Nagovizin, B. Naroska, J. Naumann, T. Naumann, P. R. Newman, F. Niebergall, C. Niebuhr, D. Nikitin, G. Nowak, M. Nozicka, B. Olivier, J. E. Olsson, D. Ozerov, V. Panassik, C. Pascaud, G. D. Patel, M. Peez, E. Perez, A. Petrukhin, J. P. Phillips, D. Pitzl, R. Pöschl, B. Povh, N. Raicevic, J. Rauschenberger, P. Reimer, B. Reisert, C. Risler, E. Rizvi, P. Robmann, R. Roosen, A. Rostovtsev, S. Rusakov, K. Rybicki, D. P.C. Sankey, E. Sauvan, S. Schätzel, J. Scheins, F. P. Schilling, P. Schleper, D. Schmidt, S. Schmidt, S. Schmitt, M. Schneider, L. Schoeffel, A. Schöning, V. Schröder, H. C. Schultz-Coulon, C. Schwanenberger, K. Sedlák, F. Sefkow, I. Sheviakov, L. N. Shtarkov, Y. Sirois, T. Sloan, P. Smirnov, Y. Soloviev, D. South, V. Spaskov, A. Specka, H. Spitzer, R. Stamen, B. Stella, J. Stiewe, I. Strauch, U. Straumann, G. Thompson, P. D. Thompson, F. Tomasz, D. Traynor, P. Truöl, G. Tsipolitis, I. Tsurin, J. Turnau, J. E. Turney, E. Tzamariudaki, A. Uraev, M. Urban, A. Usik, S. Valkár, A. Valkárová, C. Vallée, P. van Mechelen, A. Vargas Trevino, S. Vassiliev, Y. Vazdik, C. Veelken, A. Vest, A. Vichnevski, V. Volchinski, K. Wacker, J. Wagner, R. Wallny, B. Waugh, G. Weber, R. Weber, D. Wegener, C. Werner, N. Werner, M. Wessels, B. Wessling, M. Winde, G. G. Winter, C. Wissing, E. E. Woehrling, E. Wünsch, A. C. Wyatt, J. Žáček, J. Zálešák, Z. Zhang, A. Zhokin, F. Zomer, M. zur Nedden
  • c/o DESY
  • P.N. Lebedev Physical Institute of the Russian Academy of Sciences
  • Inter-University Institute for High Energies ULB-VUB
  • Institute for Theoretical and Experimental Physics
  • Universités Paris VI and VII
  • ETH Zurich
  • Physik-Institut der Universität Zürich
  • University of Manchester
  • Yerevan Physics Institute
  • University of Heidelberg
  • University of Dortmund
  • RWTH Aachen University
  • Laboratoire de l'Accélérateur Linéaire
  • Max-Planck-Institut für Physik
  • Institute of Experimental Physics Slovak Academy of Sciences
  • Universität Hamburg
  • Max-Planck-Institut für Kernphysik
  • University of Liverpool
  • Aix-Marseille Université
  • CCLRC Rutherford Appleton Laboratory
  • Dept. Fis. Ap. CINVESTAV
  • University of Birmingham
  • CEA/UVSQ/CNRS
  • Institute of Physics of the Czech Academy of Sciences
  • Christian-Albrechts-University Kiel
  • Bergische Universität Gesamthochschule Wuppertal
  • Lund University
  • European Organization for Nuclear Research
  • Queen Mary University of London
  • Paul Scherrer Institut
  • Universität Karlsruhe/Forschungszentrum Karlsruhe
  • Charles University
  • Institute for Nuclear Physics
  • Lancaster University
  • CINVESTAV-IPN
  • Joint Institute for Nuclear Research, Dubna
  • University of P.J. Šafárik
  • University Roma Tre
  • National Technical University of Athens

Résultats de recherche: Contribution à un journalArticleRevue par des pairs

87 Citations (Scopus)

Résumé

The diffractive photoproduction of J/ψ mesons is measured with the H1 detector at the ep collider HERA using an integrated luminosity of 78 pb -1. The differential cross section dσ(γp → J/ψY)/dt is studied in the range 2 < |t| < 30 GeV2, where t is the square of the four-momentum transferred at the proton vertex. The cross section is also presented as a function of the photon-proton centre-of-mass energy Wγp in three t intervals, spanning the range 50 < Wγp < 200 GeV. A fast rise of the cross section with Wγp is observed for each t range and the slope for the effective linear Pomeron trajectory is measured to be α′ = -0.0135 ± 0.0074(stat.) ± 0.0051(syst.) GeV-2. The measurements are compared with perturbative QCD models based on BFKL and DGLAP evolution. The data are found to be compatible with s-channel helicity conservation.

langue originaleAnglais
Pages (de - à)205-218
Nombre de pages14
journalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume568
Numéro de publication3-4
Les DOIs
étatPublié - 28 août 2003

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