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Measurement of dijet production at low Q 2 at HERA

  • A. Aktas
  • , V. Andreev
  • , T. Anthonis
  • , A. Asmone
  • , A. Babaev
  • , S. Backovic
  • , J. Bähr
  • , P. Baranov
  • , E. Barrelet
  • , W. Bartel
  • , S. Baumgartner
  • , J. Becker
  • , M. Beckingham
  • , O. Behnke
  • , O. Behrendt
  • , A. Belousov
  • , Ch Berger
  • , N. 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, G. Buschhorn, L. Bystritskaya, A. J. Campbell, S. Caron, F. Cassol-Brunner, K. Cerny, V. Chekelian, J. Chýla, 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, B. Delcourt, N. Delerue, R. Demirchyan, A. de Roeck, K. Desch, E. A. de Wolf, C. Diaconu, J. Dingfelder, 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, 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, M. Gregori, G. Grindhammer, D. Haidt, L. Hajduk, J. Haller, G. Heinzelmann, R. C.W. Henderson, H. Henschel, O. Henshaw, R. Heremans, G. Herrera, I. Herynek, R. D. Heuer, M. Hildebrandt, K. H. Hiller, J. Hladký, P. Höting, D. Hoffmann, R. Horisberger, A. Hovhannisyan, M. Ibbotson, M. Ismail, M. Jacquet, L. Janauschek, X. Janssen, V. Jemanov, L. Jönsson, C. Johnson, D. P. Johnson, H. Jung, D. Kant, M. Kapichine, M. Karlsson, J. Katzy, N. Keller, J. Kennedy, I. R. Kenyon, C. Kiesling, M. Klein, C. Kleinwort, T. Kluge, G. Knies, A. Knutsson, B. Koblitz, S. D. Kolya, V. Korbel, P. Kostka, R. Koutouev, A. Kropivnitskaya, J. Kroseberg, J. Kückens, T. Kuhr, M. P.J. Landon, W. Lange, T. Laštovička, 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, T. Lux, L. Lytkin, A. Makankine, N. Malden, E. Malinovski, S. Mangano, P. Marage, J. Marks, R. Marshall, M. Martisikova, 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, I. Milcewicz, D. Milstead, F. Moreau, A. Morozov, I. Morozov, J. V. Morris, M. Mozer, K. Müller, P. Murín, V. Nagovizin, B. Naroska, J. Naumann, Th Naumann, P. R. Newman, C. Niebuhr, D. Nikitin, G. Nowak, M. Nozicka, B. Olivier, J. E. Olsson, G. Ossoskov, D. Ozerov, C. Pascaud, G. D. Patel, M. Peez, E. Perez, A. Perieanu, A. Petrukhin, D. Pitzl, R. Pöschl, B. Portheault, B. Povh, N. Raicevic, J. Rauschenberger, P. Reimer, B. Reisert, C. Risler, E. Rizvi, P. Robmann, R. Roosen, A. Rostovtsev, Z. Rurikova, S. Rusakov, K. Rybicki, D. P.C. Sankey, E. Sauvan, S. Schätzel, J. Scheins, F. P. Schilling, P. Schleper, 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, M. Taševský, G. Thompson, P. D. Thompson, F. Tomasz, D. Traynor, P. Truöl, G. Tsipolitis, I. Tsurin, J. Turnau, 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, S. Vinokurova, V. Volchinski, K. Wacker, J. Wagner, B. Waugh, G. Weber, R. Weber, D. Wegener, C. Werner, N. Werner, M. Wessels, B. Wessling, M. Winde, G. G. Winter, Ch Wissing, E. E. Woehrling, E. Wünsch, W. Yan, J. Žáček, J. Zálešák, Z. Zhang, A. Zhokin, H. Zohrabyan, F. Zomer
  • c/o DESY
  • P.N. Lebedev Physical Institute of the Russian Academy of Sciences
  • Inter-University Institute for High Energies ULB-VUB
  • University Roma Tre
  • Institute for Theoretical and Experimental Physics
  • Universités Paris VI and VII
  • ETH Zurich
  • Physik-Institut der Universität Zürich
  • University of Manchester
  • 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
  • Yerevan Physics Institute
  • Aix-Marseille Université
  • Charles University
  • Institute of Physics of the Czech Academy of Sciences
  • Dept. Fis. Ap. CINVESTAV
  • University of Birmingham
  • CCLRC Rutherford Appleton Laboratory
  • Institut Pierre Simon Laplace, CNRS and CEA
  • University of Liverpool
  • Christian-Albrechts-University Kiel
  • Bergische Universität Gesamthochschule Wuppertal
  • European Organization for Nuclear Research
  • Paul Scherrer Institut
  • Universität Karlsruhe/Forschungszentrum Karlsruhe
  • Institute for Nuclear Physics
  • Queen Mary University of London
  • Lancaster University
  • CINVESTAV-IPN
  • Lund University
  • Joint Institute for Nuclear Research, Dubna
  • Ip Paris
  • University of P.J. Šafárik
  • National Technical University of Athens

Résultats de recherche: Contribution à un journalArticleRevue par des pairs

21 Citations (Scopus)

Résumé

Triple differential dijet cross sections in e ±p interactions are presented in the region of photon virtualities 2 < Q 2 < 80GeV 2, inelasticities 0.1 < y < 0.85, jet transverse energies E T 1* > 7GeV, E T 2* > 5GeV, and pseudorapidities -2.5 < η 1*, η 2* < 0. The measurements are made in the γ* p centre-of-mass frame, using an integrated luminosity of 57 pb -1. The data are compared with NLO QCD calculations and LO Monte Carlo programs with and without a resolved virtual photon contribution. NLO QCD calculations fail to describe the region of low Q 2 and low jet transverse energies, in contrast to a LO Monte Carlo generator which includes direct and resolved photon interactions with both transversely and longitudinally polarised photons. Initial and final state parton showers are tested as a mechanism for including higher order QCD effects in low E T jet production.

langue originaleAnglais
Pages (de - à)141-159
Nombre de pages19
journalEuropean Physical Journal C
Volume37
Numéro de publication2
Les DOIs
étatPublié - 1 déc. 2004

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