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Event shape analysis of deep inelastic scattering events with a large rapidity gap at HERA

  • J. Breitweg
  • , M. Derrick
  • , D. Krakauer
  • , S. Magill
  • , D. Mikunas
  • , B. Musgrave
  • , J. Repond
  • , R. Stanek
  • , R. L. Talaga
  • , R. Yoshida
  • , H. Zhang
  • , M. C.K. Mattingly
  • , F. Anselmo
  • , P. Antonioli
  • , G. Bari
  • , M. Basile
  • , L. Bellagamba
  • , D. Boscherini
  • , A. Bruni
  • , G. Bruni
  • G. Cara Romeo, G. Castellini, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, S. de Pasquale, I. Gialas, P. Giusti, G. Iacobucci, G. Laurenti, G. Levi, A. Margotti, T. Massam, R. Nania, F. Palmonari, A. Pesci, A. Polini, F. Ricci, G. Sartorelli, Y. Zamora Garcia, A. Zichichi, C. Amelung, A. Bornheim, I. Brock, K. Coböken, J. Crittenden, R. Deffner, M. Eckert, M. Grothe, H. Hartmann, K. Heinloth, L. Heinz, E. Hilger, H. P. Jakob, U. F. Katz, R. Kerger, E. Paul, M. Pfeiffer, C. Rembser, J. Stamm, R. Wedemeyer, H. Wieber, D. S. Bailey, S. Campbell-Robson, W. N. Cottingham, B. Foster, R. Hall-Wilton, M. E. Hayes, G. P. Heath, H. F. Heath, J. D. McFall, D. Piccioni, D. G. Roff, R. J. Tapper, M. Arneodo, R. Ayad, M. Capua, A. Garfagnini, L. Iannotti, M. Schioppa, G. Susinno, J. Y. Kim, J. H. Lee, I. T. Lim, M. Y. Pac, A. Caldwell, N. Cartiglia, Z. Jing, W. Liu, B. Mellado, J. A. Parsons, S. Ritz, S. Sampson, F. Sciulli, P. B. Straub, Q. Zhu, P. Borzemski, J. Chwastowski, A. Eskreys, J. Figiel, K. Klimek, M. B. Przybycień, L. Zawiejski, L. Adamczyk, B. Bednarek, M. Bukowy, K. Jeleń, D. Kisielewska, T. Kowalski, E. Rulikowska-Zarebska, L. Suszycki, J. Zajac, Z. Duliński, A. Kotański, G. Abbiendi, L. A.T. Bauerdick, U. Behrens, H. Beier, J. K. Bienlein, G. Cases, O. Deppe, K. Desler, G. Drews, U. Fricke, D. J. Gilkinson, C. Glasman, P. Göttlicher, T. Haas, W. Hain, D. Hasell, K. F. Johnson, M. Kasemann, W. Koch, U. Kötz, H. Kowalski, J. Labs, L. Lindemann, B. Löhr, M. Löwe, O. Mańczak, J. Milewski, T. Monteiro, J. S.T. Ng, D. Notz, K. Ohrenberg, I. H. Park, A. Pellegrino, F. Pelucchi, K. Piotrzkowski, M. Roco, M. Rohde, J. Roldán, J. J. Ryan, A. A. Savin, U. Schneekloth, F. Selonke, B. Surrow, E. Tassi, T. Voß, D. Westphal, G. Wolf, U. Wollmer, C. Youngman, A. F. Zarnecki, W. Zeuner, B. D. Burow, H. J. Grabosch, A. Meyer, S. Schlenstedt, G. Barbagli, E. Gallo, P. Pelfer, G. Maccarrone, L. Votano, A. Bamberger, S. Eisenhardt, P. Markun, T. Trefzger, S. Wölfle, J. T. Bromley, N. H. Brook, P. J. Bussey, A. T. Doyle, N. Macdonald, D. H. Saxon, L. E. Sinclair, E. Strickland, R. Waugh, I. Bohnet, N. Gendner, U. Holm, A. Meyer-Larsen, H. Salehi, K. Wick, L. K. Gladilin, D. Horstmann, D. Kçira, R. Klanner, E. Lohrmann, G. Poelz, W. Schott, F. Zetsche, T. C. Bacon, I. Butterworth, J. E. Cole, G. Howell, B. H.Y. Hung, L. Lamberti, K. R. Long, D. B. Miller, N. Pavel, A. Prinias, J. K. Sedgbeer, D. Sideris, R. Walker, U. Mallik, S. M. Wang, J. T. Wu, P. Cloth, D. Filges, J. I. Fleck, T. Ishii, M. Kuze, I. Suzuki, K. Tokushuku, S. Yamada, K. Yamauchi, Y. Yamazaki, S. J. Hong, S. B. Lee, S. W. Nam, S. K. Park, F. Barreiro, J. P. Fernández, G. García, R. Graciani, J. M. Hemández, L. Hervás, L. Labarga, M. Martínez, J. del Peso, J. Puga, J. Teraón, J. F. de Trocániz, F. Corriveau, D. S. Hanna, J. Hartmann, L. W. Hung, W. N. Murray, A. Ochs, M. Riveline, D. G. Stairs, M. St-Laurent, R. Ullmann, T. Tsurugai, V. Bashkirov, B. A. Dolgoshein, A. Stifutkin, G. L. Bashindzhagyan, P. F. Ermolov, Y. A. Golubkov, L. A. Khein, N. A. Korotkova, I. A. Korzhavina, V. A. Kuzmin, O. Y. Lukina, A. S. Proskuryakov, L. M. Shcheglova, A. N. Solomin, S. A. Zotkin, C. Bokel, M. Botje, N. Brümmer, F. Chlebana, J. Engelen, E. Koffeman, P. Kooijman, A. van Sighem, H. Tiecke, N. Tuning, W. Verkerke, J. Vossebeld, M. Vreeswijk, L. Wiggers, E. de Wolf, D. Acosta, B. Bylsma, L. S. Durkin, J. Gilmore, C. M. Ginsburg, C. L. Kim, T. Y. Ling, P. Nylander, T. A. Romanowski, H. E. Blaikley, R. J. Cashmore, A. M. Cooper-Sarkar, R. C.E. Devenish, J. K. Edmonds, J. Große-Knetter, N. Harnew, C. Nath, V. A. Noyes, A. Quadt, O. Ruske, J. R. Tickner, H. Uijterwaal, R. Walczak, D. S. Waters, A. Bertolin, R. Brugnera, R. Carlin, F. Dal Corso, U. Dosselli, S. Limentani, M. Morandin, M. Posocco, L. Stanco, R. Stroili, C. Voci, J. Bulmahn, B. Y. Oh, J. R. Okrasiński, W. S. Toothacker, J. J. Whitmore, Y. Iga, G. D'Agostini, G. Marini, A. Nigro, M. Raso, J. C. Hart, N. A. McCubbin, T. P. Shah, D. Epperson, C. Heusch, J. T. Rahn, H. F.W. Sadrozinski, A. Seiden, R. Wichmanm, D. C. Williams, O. Schwarzer, A. H. Walenta, H. Abramowicz, G. Briskin, S. Dagan, S. Kananov, A. Levy, T. Abe, T. Fusayasu, M. Inuzuka, K. Nagano, K. Umemori, T. Yamashita, R. Hamatsu, T. Hirose, K. Homma, S. Kitamura, T. Matsushita, R. Cirio, M. Costa, M. I. Ferrero, S. Maselli, V. Monaco, C. Peroni, M. C. Petrucci, M. Ruspa, R. Sacchi, A. Solano, A. Staiano, M. Dardo, D. C. Bailey, C. P. Fagerstroem, R. Galea, G. F. Hartner, K. K. Joo, G. M. Levman, J. F. Martin, R. S. Orr, S. Polenz, A. Sabetfakhri, D. Simmons, R. J. Teuscher, J. M. Butterworth, C. D. Catterall, T. W. Jones, J. B. Lane, R. L. Saunders, M. R. Sutton, M. Wing, J. Ciborowski, G. Grzelak, M. Kasprzak, K. Muchorowski, R. J. Nowak, J. M. Pawlak, R. Pawlak, T. Tymieniecka, A. K. Wróblewski, J. A. Zakrzewski, M. Adamus, C. Coldewey, Y. Eisenberg, D. Hochman, U. Karshon, W. F. Badgett, D. Chapin, R. Cross, S. Dasu, C. Foudas, R. J. Loveless, S. Mattingly, D. D. Reeder, W. H. Smith, A. Vaiciulis, M. Wodarczyk, A. Deshpande, S. Dhawan, V. W. Hughes, S. Bhadra, W. R. Frisken, M. Khakzad, W. B. Schmidke
  • Argonne National Laboratory
  • Andrews University
  • National Institute for Nuclear Physics
  • IROE Florence
  • University of Salerno
  • University of Crete
  • University of Bonn
  • CERN
  • University of Bristol
  • University of Calabria
  • University of Turin
  • Chonnam National University
  • Dongshin University
  • Columbia University
  • German Electron Synchrotron
  • Alfred P. Sloan Foundation Fellow
  • Institute of Nuclear Physics
  • AGH University of Krakow
  • Jagiellonian University in Kraków
  • SAP Research
  • Florida State University
  • Nokia
  • Kyungpook National University
  • Fermi National Accelerator Laboratory
  • NORCOM Infosystems
  • University of Oxford
  • University of Florence
  • University of Freiburg
  • Ludwig Maximilian University of Munich
  • University of Glasgow
  • University of Hamburg
  • Imperial College London
  • University of Iowa
  • Jülich Research Centre
  • High Energy Accelerator Research Organization, Institute of Particle and Nuclear Physics
  • The University of Osaka
  • Korea University
  • Wayne State University
  • Universidad Autónoma de Madrid
  • McGill University
  • Meiji Gakuin University
  • Moscow Engineering Physics Institute
  • Lomonosov Moscow State University
  • University of Amsterdam
  • Ohio State University
  • United States Department of Energy
  • Glasstone Fellow
  • University of Padua
  • Pennsylvania State University
  • Polytechnic University Japan
  • University of Rome La Sapienza
  • STFC Rutherford Appleton Laboratory
  • University of California at Santa Cruz
  • University of Siegen
  • Tel Aviv University
  • The University of Tokyo
  • Tokyo Metropolitan University
  • Tokyo Metropolitan College of Industrial Technology
  • University of Toronto
  • University College London
  • University of Warsaw
  • Institute of Nuclear Chemistry and Technology, Warsaw
  • Weizmann Institute of Science
  • University of Wisconsin-Madison
  • Yale University
  • York University Toronto

Research output: Contribution to journalArticlepeer-review

34 Scopus citations

Abstract

A global event shape analysis of the multihadronic final states observed in neutral current deep inelastic scattering events with a large rapidity gap with respect to the proton direction is presented. The analysis is performed in the range 5 ≤ Q2 ≤ 185 GeV2 and 160 ≤ W ≤ 250 GeV, where Q2 is the virtuality of the photon and W is the virtual-photon proton centre of mass energy. Particular emphasis is placed on the dependence of the shape variables, measured in the γ * -pomeron rest frame, on the mass of the hadronic final state, MX. With increasing MX the multihadronic final state becomes more collimated and planar. The experimental results are compared with several models which attempt to describe diffractive events. The broadening effects exhibited by the data require in these models a significant gluon component of the pomeron.

Original languageEnglish
Pages (from-to)368-384
Number of pages17
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume421
Issue number1-4
DOIs
StatePublished - Mar 5 1998

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