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Measurement of event shape variables in deep-inelastic scattering at HERA

  • A. Aktas
  • , V. Andreev
  • , T. Anthonis
  • , B. Antunovic
  • , S. Aplin
  • , A. Asmone
  • , A. Astvatsatourov
  • , A. Babaev
  • , S. Backovic
  • , J. Bähr
  • , A. Baghdasaryan
  • , P. Baranov
  • , E. Barrelet
  • , W. Bartel
  • , S. Baudrand
  • , S. Baumgartner
  • , J. Becker
  • , M. Beckingham
  • , O. Behnke
  • , O. Behrendt
  • A. Belousov, C. Berger, N. Berger, J. C. Bizot, M. O. Boenig, V. Boudry, J. Bracinik, G. Brandt, V. Brisson, D. Bruncko, F. W. Büsser, A. Bunyatyan, G. Buschhorn, L. Bystritskaya, A. J. Campbell, F. Cassol-Brunner, K. Cerny, V. Cerny, V. Chekelian, J. G. Contreras, J. A. Coughlan, B. E. Cox, G. Cozzika, J. Cvach, J. B. Dainton, W. D. Dau, K. Daum, Y. de Boer, B. Delcourt, M. Del Degan, A. de Roeck, K. Desch, E. A. de Wolf, C. Diaconu, V. Dodonov, A. Dubak, G. Eckerlin, V. Efremenko, S. Egli, R. Eichler, F. Eisele, E. Elsen, W. Erdmann, S. Essenov, A. Falkewicz, P. J.W. Faulkner, L. Favart, A. Fedotov, R. Felst, J. Feltesse, J. Ferencei, L. Finke, M. Fleischer, P. Fleischmann, G. Flucke, A. Fomenko, I. Foresti, G. Franke, T. Frisson, E. Gabathuler, E. Garutti, J. Gayler, C. Gerlich, S. Ghazaryan, S. Ginzburgskaya, A. Glazov, I. Glushkov, L. Goerlich, M. Goettlich, N. Gogitidze, S. Gorbounov, C. Goyon, C. Grab, T. Greenshaw, M. Gregori, B. R. Grell, G. Grindhammer, C. Gwilliam, D. Haidt, L. Hajduk, M. Hansson, G. Heinzelmann, R. C.W. Henderson, H. Henschel, G. Herrera, M. Hildebrandt, K. H. Hiller, D. Hoffmann, R. Horisberger, A. Hovhannisyan, T. Hreus, S. Hussain, M. Ibbotson, M. Ismail, M. Jacquet, L. Janauschek, X. Janssen, V. Jemanov, L. Jönsson, D. P. Johnson, A. W. Jung, H. Jung, M. Kapichine, J. Katzy, I. R. Kenyon, C. Kiesling, M. Klein, C. Kleinwort, T. Klimkovich, T. Kluge, G. Knies, A. Knutsson, V. Korbel, P. Kostka, K. Krastev, J. Kretzschmar, A. Kropivnitskaya, K. Krüger, J. Kückens, M. P.J. Landon, W. Lange, T. Laštovička, G. Laštovička-Medin, P. Laycock, A. Lebedev, G. Leibenguth, V. Lendermann, S. Levonian, L. Lindfeld, K. Lipka, A. Liptaj, B. List, J. List, E. Lobodzinska, N. Loktionova, R. Lopez-Fernandez, V. Lubimov, A. I. Lucaci-Timoce, H. Lueders, D. Lüke, T. Lux, L. Lytkin, A. Makankine, N. Malden, E. Malinovski, S. Mangano, P. Marage, R. Marshall, M. Martisikova, H. U. Martyn, S. J. Maxfield, D. Meer, A. Mehta, K. Meier, A. B. Meyer, H. Meyer, J. Meyer, V. Michels, S. Mikocki, I. Milcewicz-Mika, D. Milstead, D. Mladenov, A. Mohamed, F. Moreau, A. Morozov, J. V. Morris, M. U. Mozer, K. Müller, P. Murín, K. Nankov, B. Naroska, T. Naumann, P. R. Newman, C. Niebuhr, A. Nikiforov, G. Nowak, M. Nozicka, R. Oganezov, B. Olivier, J. E. Olsson, S. Osman, D. Ozerov, V. Palichik, I. Panagoulias, T. Papadopoulou, C. Pascaud, G. D. Patel, H. Peng, E. Perez, D. Perez-Astudillo, A. Perieanu, A. Petrukhin, D. Pitzl, R. Plačakyte, B. Portheault, B. Povh, P. Prideaux, A. J. Rahmat, N. Raicevic, P. Reimer, A. Rimmer, C. Risler, E. Rizvi, P. Robmann, B. Roland, R. Roosen, A. Rostovtsev, Z. Rurikova, S. Rusakov, F. Salvaire, D. P.C. Sankey, E. Sauvan, S. Schätzel, S. Schmidt, S. Schmitt, C. Schmitz, L. Schoeffel, A. Schöning, H. C. Schultz-Coulon, K. Sedlák, F. Sefkow, R. N. Shaw-West, I. Sheviakov, L. N. Shtarkov, T. Sloan, P. Smirnov, Y. Soloviev, D. South, V. Spaskov, A. Specka, M. Steder, B. Stella, J. Stiewe, I. Strauch, U. Straumann, D. Sunar, V. Tchoulakov, G. Thompson, P. D. Thompson, F. Tomasz, D. Traynor, P. Truöl, I. Tsakov, G. Tsipolitis, I. Tsurin, J. Turnau, E. Tzamariudaki, K. Urban, M. Urban, A. Usik, D. Utkin, A. Valkárová, C. Vallée, P. van Mechelen, A. Vargas Trevino, Y. Vazdik, C. Veelken, S. Vinokurova, V. Volchinski, K. Wacker, J. Wagner, G. Weber, R. Weber, D. Wegener, C. Werner, M. Wessels, B. Wessling, C. Wigmore, C. Wissing, R. Wolf, E. Wünsch, S. Xella, W. Yan, V. Yeganov, J. Žáček, J. Zálešák, Z. Zhang, A. Zhelezov, A. Zhokin, Y. C. Zhu, J. Zimmermann, T. Zimmermann, 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
  • Max-Planck-Institut für Physik
  • University Roma Tre
  • Institute for Theoretical and Experimental Physics
  • University of Montenegro
  • Yerevan Physics Institute
  • Universités Paris VI and VII
  • Laboratoire de l'Accélérateur Linéaire
  • ETH Zurich
  • Physik-Institut der Universität Zürich
  • University of Dortmund
  • RWTH Aachen University
  • University of Heidelberg
  • Slovak Academy of Sciences
  • Universität Hamburg
  • Max-Planck-Institut für Kernphysik
  • Université Paris-Sud
  • Charles University
  • Comenius University
  • Dept. Fis. Ap. CINVESTAV
  • CCLRC Rutherford Appleton Laboratory
  • University of Manchester
  • Institut Pierre Simon Laplace, CNRS and CEA
  • Institute of Physics of the Czech Academy of Sciences
  • University of Liverpool
  • Christian-Albrechts-University Kiel
  • Bergische Universität Gesamthochschule Wuppertal
  • European Organization for Nuclear Research
  • Paul Scherrer Institut
  • Institute for Nuclear Physics
  • University of Birmingham
  • Queen Mary University of London
  • Lund University
  • Lancaster University
  • Departamento de Fisica CINVESTAV
  • Joint Institute for Nuclear Research, Dubna
  • Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences
  • University of P.J. Šafárik
  • National Technical University of Athens

Résultats de recherche: Contribution à un journalArticleRevue par des pairs

Résumé

Deep-inelastic ep scattering data taken with the HI detector at HERA and corresponding to an integrated luminosity of 106 pb-1 are used to study the differential distributions of event shape variables. These include thrust, jet broadening, jet mass and the C-parameter. The four-momentum transfer Q is taken to be the relevant energy scale and ranges between 14 GeV and 200 GeV. The event shape distributions are compared with perturbative QCD predictions, which include resummed contributions and analytical power law corrections, the latter accounting for non-perturbative hadronisation effects. The data clearly exhibit the running of the strong coupling α s(Q) and are consistent with a universal power correction parameter α0 for all event shape variables. A combined QCD fit using all event shape variables yields αs(mZ) = 0.1198 ± 0.0013 -0.0043+0.0056 and α0 = 0.476 ± 0.008 -0.059+0.018.

langue originaleAnglais
Numéro d'article343
Pages (de - à)343-356
Nombre de pages14
journalEuropean Physical Journal C
Volume46
Numéro de publication2
Les DOIs
étatPublié - 1 janv. 2006

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