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Search for excited electrons in ep collisions at HERA

  • F. D. Aaron
  • , C. Alexa
  • , V. Andreev
  • , B. Antunovic
  • , S. Aplin
  • , A. Asmone
  • , A. Astvatsatourov
  • , A. Bacchetta
  • , S. Backovic
  • , A. Baghdasaryan
  • , P. Baranov
  • , E. Barrelet
  • , W. Bartel
  • , M. Beckingham
  • , K. Begzsuren
  • , O. Behnke
  • , A. Belousov
  • , N. Berger
  • , J. C. Bizot
  • , M. O. Boenig
  • 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, S. Essenov, A. Falkiewicz, P. J.W. Faulkner, L. Favart, A. Fedotov, R. Felst, J. Feltesse, J. Ferencei, L. Finke, M. Fleischer, A. Fomenko, E. Gabathuler, J. Gayler, S. Ghazaryan, A. Glazov, I. Glushkov, L. Goerlich, M. Goettlich, N. Gogitidze, M. Gouzevitch, C. Grab, T. Greenshaw, B. R. Grell, G. Grindhammer, S. Habib, D. Haidt, M. Hansson, C. Helebrant, R. C.W. Henderson, H. Henschel, G. Herrera, M. Hildebrandt, K. H. Hiller, D. Hoffmann, R. Horisberger, A. Hovhannisyan, T. Hreus, M. Jacquet, M. E. Janssen, 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, 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, A. I. Lucaci-Timoce, L. Lytkin, A. Makankine, E. Malinovski, P. Marage, Ll Marti, H. U. Martyn, S. J. Maxfield, A. Mehta, K. Meier, 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, K. Nankov, 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, H. Peng, E. Perez, A. Petrukhin, I. Picuric, S. Piec, D. Pitzl, R. Plačakyte, 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. Salek, F. Salvaire, D. P.C. Sankey, M. Sauter, E. Sauvan, S. Schmidt, 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, P. Smirnov, Y. Soloviev, P. Sopicki, D. South, V. Spaskov, A. Specka, Z. Staykova, M. Steder, B. Stella, 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, I. Tsurin, J. Turnau, E. Tzamariudaki, K. Urban, A. Valkárová, C. Vallée, P. Van Mechelen, A. Vargas Trevino, Y. Vazdik, S. Vinokurova, V. Volchinski, D. Wegener, M. Wessels, Ch Wissing, E. Wünsch, V. Yeganov, J. Žáček, J. Zálešák, Z. Zhang, A. Zhelezov, A. Zhokin, Y. C. Zhu, T. Zimmermann, H. Zohrabyan, F. Zomer
  • Horia Hulubei National Institute of Physics and Nuclear Engineering
  • P.N. Lebedev Physical Institute of the Russian Academy of Sciences
  • c/o DESY
  • University Roma Tre
  • University of Antwerp
  • University of Montenegro
  • Yerevan Physics Institute
  • Universités Paris VI and VII
  • Institute of Physics and Technology of the Mongolian Academy of Sciences
  • University of Heidelberg
  • ETH Zurich
  • Laboratoire de l'Accélérateur Linéaire
  • University of Dortmund
  • University of Belgrade
  • University of Birmingham
  • 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
  • Institut Pierre Simon Laplace, CNRS and CEA
  • Institute of Physics of the Czech Academy of Sciences
  • University of Liverpool
  • Bergische Universität Gesamthochschule Wuppertal
  • Paul Scherrer Institut
  • Institute for Nuclear Physics
  • Universität Hamburg
  • Lund University
  • Lancaster University
  • CINVESTAV-IPN
  • Joint Institute for Nuclear Research, Dubna
  • Queen Mary University of London
  • RWTH Aachen University
  • Physik-Institut der Universität Zürich
  • 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 electrons is performed using the full e ± p data sample collected by the H1 experiment at HERA, corresponding to a total luminosity of 475 pb -1. The electroweak decays of excited electrons e * → e γ, e * → e Z and e * → ν W with subsequent hadronic or leptonic decays of the W and Z bosons are considered. No evidence for excited electron production is found. Mass dependent exclusion limits on e * 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 electron searches. The e * production via contact interactions is also addressed for the first time in ep collisions.

langue originaleAnglais
Pages (de - à)131-139
Nombre de pages9
journalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume666
Numéro de publication2
Les DOIs
étatPublié - 14 août 2008

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