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Search for excited quarks in ep collisions at HERA

  • F. D. Aaron
  • , C. Alexa
  • , K. Alimujiang
  • , V. Andreev
  • , B. Antunovic
  • , A. Asmone
  • , S. Backovic
  • , A. Baghdasaryan
  • , E. Barrelet
  • , W. Bartel
  • , K. Begzsuren
  • , A. Belousov
  • , J. C. Bizot
  • , V. Boudry
  • , I. Bozovic-Jelisavcic
  • , J. Bracinik
  • , G. Brandt
  • , M. Brinkmann
  • , V. Brisson
  • , D. Bruncko
  • A. Bunyatyan, G. Buschhorn, L. Bystritskaya, A. J. Campbell, K. B.Cantun Avila, F. Cassol-Brunner, K. Cerny, V. Cerny, V. Chekelian, A. Cholewa, J. G. Contreras, J. A. Coughlan, G. Cozzika, J. Cvach, J. B. Dainton, K. Daum, M. Deák, Y. de Boer, B. Delcourt, M. Del Degan, J. Delvax, A. De Roeck, E. A. De Wolf, C. Diaconu, V. Dodonov, A. Dossanov, A. Dubak, G. Eckerlin, V. Efremenko, S. Egli, A. Eliseev, E. Elsen, A. Falkiewicz, P. J.W. Faulkner, L. Favart, A. Fedotov, R. Felst, J. Feltesse, J. Ferencei, D. J. Fischer, M. Fleischer, A. Fomenko, E. Gabathuler, J. Gayler, S. Ghazaryan, A. Glazov, I. Glushkov, L. Goerlich, N. Gogitidze, M. Gouzevitch, C. Grab, T. Greenshaw, B. R. Grell, G. Grindhammer, S. Habib, D. Haidt, C. Helebrant, R. C.W. Henderson, E. Hennekemper, H. Henschel, M. Herbst, G. Herrera, M. Hildebrandt, K. H. Hiller, D. Hoffmann, R. Horisberger, T. Hreus, M. Jacquet, M. E. Janssen, X. Janssen, V. Jemanov, L. Jönsson, A. W. Jung, H. Jung, M. Kapichine, J. Katzy, I. R. Kenyon, C. Kiesling, M. Klein, C. Kleinwort, T. Kluge, A. Knutsson, R. Kogler, V. Korbel, P. Kostka, M. Kraemer, K. Krastev, J. Kretzschmar, A. Kropivnitskaya, K. Krüger, K. Kutak, M. P.J. Landon, W. Lange, G. Laštovička-Medin, P. Laycock, A. Lebedev, G. Leibenguth, V. Lendermann, S. Levonian, G. Li, K. Lipka, A. Liptaj, B. List, J. List, N. Loktionova, R. Lopez-Fernandez, V. Lubimov, L. Lytkin, A. Makankine, E. Malinovski, P. Marage, Ll Marti, H. U. Martyn, S. J. Maxfield, A. Mehta, A. B. Meyer, H. Meyer, H. Meyer, J. Meyer, V. Michels, S. Mikocki, I. Milcewicz-Mika, F. Moreau, A. Morozov, J. V. Morris, M. U. Mozer, M. Mudrinic, K. Müller, P. Murín, B. Naroska, Th Naumann, P. R. Newman, C. Niebuhr, A. Nikiforov, G. Nowak, K. Nowak, M. Nozicka, B. Olivier, J. E. Olsson, S. Osman, D. Ozerov, V. Palichik, I. Panagoulias, M. Pandurovic, Th Papadopoulou, C. Pascaud, G. D. Patel, O. Pejchal, E. Perez, A. Petrukhin, I. Picuric, S. Piec, D. Pitzl, R. Plačakyte, B. Pokorny, R. Polifka, B. Povh, T. Preda, V. Radescu, A. J. Rahmat, N. Raicevic, A. Raspiareza, T. Ravdandorj, P. Reimer, E. Rizvi, P. Robmann, B. Roland, R. Roosen, A. Rostovtsev, M. Rotaru, J. E.Ruiz Tabasco, Z. Rurikova, S. Rusakov, D. Šálek, D. P.C. Sankey, M. Sauter, E. Sauvan, S. Schmitt, C. Schmitz, L. Schoeffel, A. Schöning, H. C. Schultz-Coulon, F. Sefkow, R. N. Shaw-West, I. Sheviakov, L. N. Shtarkov, S. Shushkevich, T. Sloan, I. Smiljanic, Y. Soloviev, P. Sopicki, D. South, V. Spaskov, A. Specka, Z. Staykova, M. Steder, B. Stella, G. Stoicea, U. Straumann, D. Sunar, T. Sykora, V. Tchoulakov, G. Thompson, P. D. Thompson, T. Toll, F. Tomasz, T. H. Tran, D. Traynor, T. N. Trinh, P. Truöl, I. Tsakov, B. Tseepeldorj, J. Turnau, K. Urban, A. Valkárová, C. Vallée, P. Van Mechelen, A. Vargas Trevino, Y. Vazdik, S. Vinokurova, V. Volchinski, M. von den Driesch, D. Wegener, Ch Wissing, E. Wünsch, J. Žáček, J. Zálešák, Z. Zhang, A. Zhokin, T. Zimmermann, H. Zohrabyan, F. Zomer, R. Zus
  • Horia Hulubei National Institute of Physics and Nuclear Engineering
  • c/o DESY
  • P.N. Lebedev Physical Institute of the Russian Academy of Sciences
  • University Roma Tre
  • University of Montenegro
  • Yerevan Physics Institute
  • Universités Paris VI and VII
  • Institute of Physics and Technology of the Mongolian Academy of Sciences
  • Laboratoire de l'Accélérateur Linéaire
  • University of Belgrade
  • University of Birmingham
  • Universität Hamburg
  • Institute of Experimental Physics Slovak Academy of Sciences
  • Max-Planck-Institut für Kernphysik
  • Max-Planck-Institut für Physik
  • Institute for Theoretical and Experimental Physics
  • Dept. Fis. Ap. CINVESTAV
  • Aix-Marseille Université
  • Charles University
  • CCLRC Rutherford Appleton Laboratory
  • CEA/UVSQ/CNRS
  • Institute of Physics of the Czech Academy of Sciences
  • University of Liverpool
  • Bergische Universität Gesamthochschule Wuppertal
  • ETH Zurich
  • Inter-University Institute for High Energies ULB-VUB
  • Paul Scherrer Institut
  • Institute for Nuclear Physics
  • Lancaster University
  • University of Heidelberg
  • CINVESTAV-IPN
  • Lund University
  • Joint Institute for Nuclear Research, Dubna
  • Queen Mary University of London
  • RWTH Aachen University
  • University of Zurich
  • University of Dortmund
  • Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences

Résultats de recherche: Contribution à un journalArticleRevue par des pairs

Résumé

A search for excited quarks is performed using the full e ± p data sample collected by the H1 experiment at HERA, corresponding to a total integrated luminosity of 475   pb - 1. The electroweak decays of excited quarks q * → q γ, q * → q Z and q * → q W with subsequent hadronic or leptonic decays of the W and Z bosons are considered. No evidence for first generation excited quark production is found. Mass dependent exclusion limits on q * production cross sections and on the ratio f / Λ of the coupling to the compositeness scale are derived within gauge mediated models. These limits extend the excluded region compared to previous excited quark searches.

langue originaleAnglais
Pages (de - à)335-343
Nombre de pages9
journalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume678
Numéro de publication4
Les DOIs
étatPublié - 27 juil. 2009

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