Study of photon dissociation in diffractive photoproduction 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. BruniG. 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, G. Sartorelli, Y. Zamora Garcia, A. Zichichi, C. Amelung, A. Bornheim, I. Brock, K. Coböken, J. Crittenden, R. Deffner, M. Ecken, L. Feld, M. Grothe, H. Hartmann, K. Heinloth, L. Heinz, E. Hilger, H. P. Jakob, U. F. Katz, E. Paul, M. Pfeiffer, Ch Rembser, J. Stamm, R. Wedemeyer, D. S. Bailey, S. Campbell-Robson, W. N. Cottingham, B. Foster, R. Hall-Wilton, M. E. Hayes, G. P. Heath, H. F. Heath, 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, J. A. Parsons, S. Ritz, S. Sampson, F. Sciulli, P. B. Straub, Q. Zhu, P. Borzemski, J. Chwastowski, A. Eskreys, Z. Jakubowski, M. B. Przybycień, M. Zachara, L. Zawiejski, L. Adamczyk, B. Bednarek, K. Jelén, D. Kisielewska, T. Kowalski, E. Rulikowska-Zarȩbska, L. Suszycki, J. Zaja̧c, 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, J. Große-Kneller, T. Haas, W. Hain, D. Hasell, H. Heßling, K. F. Johnson, M. Kasemann, W. Koch, U. Kotz, H. Kowalski, J. Labs, L. Lindemann, B. Löhr, M. Löwe, J. Mainusch, 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, W. Schulz, F. Selonke, B. Surrow, E. Tassi, T. Voß, D. Weslphal, 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, D. H. Saxon, L. E. Sinclair, E. Strickland, M. L. Utley, R. Waugh, A. S. Wilson, I. Bohnet, N. Gendner, U. Holm, A. Meyer-Larsen, H. Salehi, K. Wick, L. K. Gladilin, R. Klanner, E. Lohrmann, G. Poelz, W. Schott, F. Zetsche, T. C. Bacon, I. Butterworth, J. E. Cole, V. L. Harris, G. Howell, B. H.Y. Hung, L. Lamberti, K. R. Long, D. B. Miller, N. Pavel, A. Prinias, J. K. Sedgbeer, D. Sideris, A. F. Whitfield, U. Mallik, S. M. Wang, J. T. Wu, P. Cloth, D. Filges, J. I. Fleck, T. Ishii, M. Kuze, M. Nakao, K. Tokushuku, S. Yamada, Y. Yamazaki, S. H. An, S. B. Lee, S. W. Nam, H. S. Park, S. K. Park, F. Barreiro, J. P. Fernandez, R. Graciani, J. M. Hernández, L. Hervás, L. Labarga, M. Martinez, J. Del Peso, J. Puga, J. Terron, J. F. De Trocóniz, F. Corriveau, D. S. Hanna, J. Hartmann, L. W. Hung, J. N. Lim, 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, Yu A. Golubkov, L. A. Khein, N. A. Korotkova, I. A. Korzhavina, V. A. Kuzmin, O. Yu Lukina, A. S. Proskuryakov, L. M. Shcheglova, A. V. Shumilin, A. N. Solomin, S. A. Zotkin, C. Bokel, M. Botje, N. Brümmer, F. Chlebana, J. Engelen, P. Kooijman, A. Kruse, A. Van Sighem, H. Tiecke, 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, N. Harnew, M. Lancaster, J. D. McFall, C. Nath, V. A. Noyes, A. Quadt, J. R. Tickner, H. Uijterwaal, R. Walczak, D. S. Waters, T. Yip, 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, R. G. Feild, B. Y. Oh, J. R. Okrasiński, J. J. Whitmore, Y. Iga, G. D'Agostini, G. Marini, A. Nigro, M. Raso, J. C. Hart, N. A. McCubbin, T. P. Shah, E. Barberis, T. Dubbs, C. Heusch, M. Van Hook, W. Lockman, J. T. Rahn, H. F.W. Sadrozinski, A. Seiden, D. C. Williams, O. Schwarzer, A. H. Walenta, H. Abramowicz, G. Briskin, S. Dagan, T. Doeker, S. Kananov, A. Levy, T. Abe, M. Inuzuka, K. Nagano, I. Suzuki, K. Umemori, R. Hamatsu, T. Hirose, K. Homma, S. Kitamura, T. Matsushita, K. Yamauchi, R. Cirio, M. Costa, M. I. Ferrero, S. Maselli, V. Monaco, C. Peroni, M. C. Petrucci, R. Sacchi, A. Solano, A. Staiano, M. Dardo, D. C. Bailey, M. Brkic, C. P. Fagerstroem, G. F. Hartner, K. K. Joo, G. M. Levman, J. F. Martin, R. S. Orr, S. Polenz, C. R. Sampson, D. Simmons, R. J. Teuscher, J. M. Butterworth, C. D. Catterall, T. W. Jones, P. B. Kaziewicz, J. B. Lane, R. L. Saunders, J. Shulman, M. R. Sutton, B. Lu, L. W. Mo, 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, D. Revel, 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, S. Bhadra, W. R. Frisken, M. Khakzad, W. B. Schmidke

*Corresponding author for this work

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40 Scopus citations

Abstract

Diffractive dissociation of quasi-real photons at a photon-proton centre of mass energy of W ≈ 200 GeV is studied with the ZEUS detector at HERA. The process under consideration is γp → XN, where X is the diffractively dissociated photon system of mass MX and N is either a proton or a nucleonic system with mass MN < 2 GeV. The cross section for this process in the interval 3 < MX < 24 GeV relative to the total photoproduction cross section was measured to be σD partialtot = 6.2 ± 0.2(stat) ± 1.4(syst)%. After extrapolating this result to the mass interval of mφ 2 < MX 2 < 0.05W2 and correcting it for proton dissociation, the fraction of the total cross section attributed to single diffractive photon dissociation, γp → Xp, is found to be σSDtot = 13.3 ± 0.5(stat) ± 3.6(syst)%. The mass spectrum of the dissociated photon system in the interval 8 < MX < 24 GeV can be described by the triple pomeron (IP IP IP) diagram with an effective pomeron intercept of αIP(0) = 1.12 ± 0.04(stat) ± 0.08(syst). The cross section for photon dissociation in the range 3 < MX < 8 GeV is significantly higher than that expected from the triple pomeron amplitude describing the region 8 < MX < 24 GeV. Assuming that this discrepancy is due to a pomeron-pomeron-reggeon (IP IP IR) term, its contribution to the diffractive cross section in the interval 3 < MX < 24 GeV is estimated to be fIP IP IR = 26 ± 3(stat) ± 12(syst)%.

Original languageEnglish
Pages (from-to)421-435
Number of pages15
JournalZeitschrift fur Physik C-Particles and Fields
Volume75
Issue number3
DOIs
StatePublished - Jul 1997

Funding

FundersFunder number
German Federal Ministry for Education and Science, Research and Technology
German Israeli Foundation
Italian National Institute for Nuclear Physics
Korean Ministry of Education and Korea Science and Engineering Foundation
MINERVA Gesellschaft für Forschung GmbH
Netherlands Foundation for Research on Matter
Tokyo Metropolitan College of Allied Medical Sciences
University College
National Science Foundation
U.S. Department of Energy
Yale University
Foundation for Community Association Research
Fermilab
Natural Sciences and Engineering Research Council of Canada
European Commission
Deutscher Akademischer Austauschdienst
Japan Society for the Promotion of Science
Ministry of Education, Culture, Sports, Science and Technology
Stichting voor Fundamenteel Onderzoek der Materie
German-Israeli Foundation for Scientific Research and DevelopmentI-0444-176.07/95 26
German-Israeli Foundation for Scientific Research and Development
United States-Israel Binational Science Foundation
Bundesministerium für Bildung und Forschung057HH29P, 057HH19P, 057FR19P, 057BN19P
Bundesministerium für Bildung und Forschung
Kyungpook National University
Ministerio de Educación, Cultura y Deporte
Ministry of Education and Science of the Russian Federation
Israel Science Foundation
Instituto Nazionale di Fisica Nucleare
Komitet Badań Naukowych2 P03B 083 08, 2P03B09308 39, 115/E-343/SPUB/P03/120/96, 2P03B09208
Komitet Badań Naukowych
Comisión Interministerial de Ciencia y Tecnología
Midlands State University

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