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Forward π○-meson production at HERA

  • C. Adloff
  • , V. Andreev
  • , B. Andrieu
  • , V. Arkadov
  • , A. Astvatsatourov
  • , I. Ayyaz
  • , A. Babaev
  • , J. Bahr
  • , P. Baranov
  • , E. Barrelet
  • , W. Bartel
  • , U. Bassler
  • , P. Bate
  • , A. Beglarian
  • , O. Behnke
  • , C. Beier
  • , A. Belousov
  • , T. Benisch
  • , C. Berger
  • , G. Bernardi
  • T. Berndt, G. Bertrand-Coremans, P. Biddulph, J. C. Bizot, K. Borras, V. Boudry, W. Braunschweig, V. Brisson, H. B. Broker, D. P. Brown, W. Bruckner, P. Bruel, D. Bruncko, J. Bürger, F. W. Busser, A. Bunyatyan, S. Burke, A. Burrage, G. Buschhorn, A. J. Campbell, J. Cao, T. Carli, E. Chabert, M. Charlet, D. Clarke, B. Clerbaux, C. Collard, J. G. Contreras, J. A. Coughlan, M. C. Cousinou, B. E. Cox, G. Cozzika, J. Cvach, J. B. Dainton, W. D. Dau, K. Daum, M. David, M. Davidsson, B. Delcourt, R. Demirchyan, A. de Roeck, E. A. de Wolf, C. Diaconu, P. Dixon, V. Dodonov, K. T. Donovan, J. D. Dowell, A. Droutskoi, C. Duprel, J. Ebert, G. Eckerlin, D. Eckstein, V. Efremenko, S. Egli, R. Eichler, F. Eisele, E. Eisenhandler, E. Elsen, M. Erdmann, A. B. Fahr, P. J.W. Faulkner, L. Favart, A. Fedotov, R. Felst, J. Feltesse, J. Ferencei, F. Ferrarotto, S. Ferron, M. Fleischer, G. Flügge, A. Fomenko, I. Foresti, J. Formánek, J. M. Foster, G. Franke, E. Gabathuler, K. Gabathuler, J. Garvey, J. Gassner, J. Gayler, R. Gerhards, S. Ghazaryan, A. Glazov, L. Goerlich, N. Gogitidze, M. Goldberg, I. Gorelov, C. Grab, H. Grassler, T. Greenshaw, R. K. Griffiths, G. Grindhammer, T. Hadig, D. Haidt, L. Hajduk, V. Haustein, W. J. Haynes, B. Heinemann, G. Heinzelmann, R. C.W. Henderson, S. Hengstmann, H. Henschel, R. Heremans, G. Herrera, I. Herynek, M. Hilgers, K. H. Hiller, C. D. Hilton, J. Hladky, P. Höting, D. Hoffmann, R. Horisberger, S. Hurling, M. Ibbotson, C. Işsever, M. Jacquet, M. Jaffre, L. Janauschek, D. M. Jansen, X. Janssen, L. Jönsson, D. P. Johnson, M. Jones, H. Jung, H. K. Kästli, D. Kant, M. Kapichine, M. Karlsson, O. Karschnick, O. Kaufmann, M. Kausch, F. Keil, N. Keller, I. R. Kenyon, S. Kermiche, C. Kiesling, M. Klein, C. Kleinwort, G. Knies, H. Kolanoski, S. D. Kolya, V. Korbel, P. Kostka, S. K. Kotelnikov, M. W. Krasny, H. Krehbiel, J. Kroseberg, D. Krucker, K. Krüger, A. Küpper, T. Kuhr, T. Kurca, W. Lachnit, R. Lahmann, D. Lamb, M. P.J. Landon, W. Lange, A. Lebedev, F. Lehner, V. Lemaitre, R. Lemrani, V. Lendermann, S. Levonian, M. Lindstroem, G. Lobo, E. Lobodzinska, V. Lubimov, S. Luders, D. Lüke, L. Lytkin, N. Magnussen, H. Mahlke-Kruger, N. Malden, E. Malinovski, I. Malinovski, R. Maraček, P. Marage, J. Marks, R. Marshall, H. U. Martyn, J. Martyniak, S. J. Maxfield, T. R. McMahon, A. Mehta, K. Meier, P. Merkel, F. Metlica, A. Meyer, H. Meyer, J. Meyer, P. O. Meyer, S. Mikocki, D. Milstead, R. Mohr, S. Mohrdieck, M. N. Mondragon, F. Moreau, A. Morozov, J. V. Morris, D. Muller, K. Muller, P. Murín, V. Nagovizin, B. Naroska, J. Naumann, T. Naumann, I. Negri, P. R. Newman, H. K. Nguyen, T. C. Nicholls, F. Niebergall, C. Niebuhr, O. Nix, G. Nowak, T. Nunnemann, J. E. Olsson, D. Ozerov, V. Panassik, C. Pascaud, S. Passaggio, G. D. Patel, E. Perez, J. P. Phillips, D. Pitzl, R. Pöschl, I. Potashnikova, B. Povh, K. Rabbertz, G. Radel, J. Rauschenberger, P. Reimer, B. Reisert, D. Reyna, S. Riess, E. Rizvi, P. Robmann, R. Roosen, A. Rostovtsev, C. Royon, S. Rusakov, K. Rybicki, D. P.C. Sankey, J. Scheins, F. P. Schilling, S. Schleif, P. Schleper, D. Schmidt, D. Schmidt, L. Schoeffel, T. Schörner, V. Schroder, H. C. Schultz-Coulon, F. Sefkow, V. Shekelyan, I. Sheviakov, L. N. Shtarkov, G. Siegmon, P. Sievers, Y. Sirois, T. Sloan, P. Smirnov, M. Smith, V. Solochenko, Y. Soloviev, V. Spaskov, A. Specka, H. Spitzer, R. Stamen, J. Steinhart, B. Stella, A. Stellberger, J. Stiewe, U. Straumann, W. Struczinski, J. P. Sutton, M. Swart, M. Taševský, V. Tchernyshov, S. Tchetchelnitski, G. Thompson, P. D. Thompson, N. Tobien, D. Traynor, P. Truöl, G. Tsipolitis, J. Turnau, J. Turney, E. Tzamariudaki, S. Udluft, A. Usik, S. Valkar, A. Valkárová, C. Vallée, A. van Haecke, P. van Mechelen, Y. Vazdik, G. Villet, S. von Dombrowski, K. Wacker, R. Wallny, T. Walter, B. Waugh, G. Weber, M. Weber, D. Wegener, A. Wegner, T. Wengler, M. Werner, L. R. West, G. White, S. Wiesand, T. Wilksen, M. Winde, G. G. Winter, C. Wissing, M. Wobisch, H. Wollatz, E. Wunsch, J. Žáček, J. Zálešák, Z. Zhang, A. Zhokin, P. Zini, F. Zomer, J. Zsembery, M. zur Nedden
  • Bergische Universität Gesamthochschule Wuppertal
  • P.N. Lebedev Physical Institute of the Russian Academy of Sciences
  • c/o DESY
  • Université Paris-Sud
  • Institute for Theoretical and Experimental Physics
  • Department of Physics and Astronomy
  • University of Manchester
  • Yerevan Physics Institute
  • Institut für Hochenergiephysik
  • University of Heidelberg
  • RWTH Aachen University
  • Inter-University Institute for High Energies ULB-VUB
  • Laboratoire de l'Accélérateur Linéaire
  • Institut für Physik
  • University of Dortmund
  • Max-Planck-Institut für Kernphysik
  • Institute of Experimental Physics Slovak Academy of Sciences
  • Universität Hamburg
  • School of Physics and Chemistry
  • Lancaster University
  • Department of Physics
  • University of Liverpool
  • Max-Planck-Institut für Physik
  • Aix-Marseille Université
  • CCLRC Rutherford Appleton Laboratory
  • Joint Institute for Nuclear Research, Dubna
  • Dept. Fis. Ap. CINVESTAV
  • Institute of Physics of the Czech Academy of Sciences
  • Christian-Albrechts-University Kiel
  • Rechenzentrum
  • Institut Pierre Simon Laplace, CNRS and CEA
  • Department of Physics
  • Lund University
  • Queen Mary University of London
  • School of Physics and Space Research
  • University of Birmingham
  • Physik-Institut der Universität Zürich
  • Institut für Teilchenphysik
  • ETH Zurich
  • Institut für Experimentelle Kernphysik
  • Universität Karlsruhe/Forschungszentrum Karlsruhe
  • University Roma Tre
  • Nuclear Center
  • Charles University
  • Paul Scherrer Institut
  • Institute for Nuclear Physics
  • Institut für Physik
  • Humboldt-Universität zu Berlin
  • University of P.J. Šafárik

Research output: Contribution to journal › Article › peer-review

40 Citations (Scopus)

Abstract

High transverse momentum π○-mesons have been measured with the H1 detector at HERA in deep-inelastic ep scattering events at low Bjorken-x, down to x ≈ 4 · 10-5. The measurement is performed in a region of small angles with respect to the proton remnant in the laboratory frame of reference, namely the forward region, and corresponds to central rapidity in the centre of mass system of the virtual photon and proton. This region is expected to be particularly sensitive to QCD effects in hadronic final states. Differential cross-sections for inclusive π○-meson production are presented as a function of Bjorken-x and the four-momentum transfer squared, Q2, and as a function of transverse momentum and pseudorapidity. A recent numerical BFKL calculation and predictions from QCD models based on DGLAP parton evolution are compared with the data.

Original languageEnglish
Pages (from-to)440-452
Number of pages13
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume462
Issue number3-4
DOIs
Publication statusPublished - 1 Jan 1999

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