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Measurement of inclusive D*± and associated dijet cross sections in 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. Bruni
  • G. Cara Romeo, G. Castellini, L. Cifarelli, F. Cindolo, A. Contin, N. Coppola, M. Corradi, S. de Pasquale, 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. Eckert, M. Grothe, H. Hartmann, K. Heinloth, L. Heinz, E. Hilger, H. P. Jakob, A. Kappes, U. F. Katz, R. Kerger, E. Paul, M. Pfeiffer, H. Schnurbusch, H. Wieber, D. S. Bailey, S. Campbell-Robson, W. N. Cottingham, B. Foster, R. Hall-Wilton, G. P. Heath, H. F. Heath, J. D. McFall, D. Piccioni, D. G. Roff, R. J. Tapper, M. Capua, L. Iannotti, A. Mastroberardino, 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, A. M. Czermak, 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, K. Desler, G. Drews, U. Fricke, I. Gialas, F. Goebel, P. Göttlicher, R. Graciani, T. Haas, W. Hain, G. F. Hartner, D. Hasell, K. Hebbel, K. F. Johnson, M. Kasemann, W. Koch, U. Kötz, H. Kowalski, L. Lindemann, B. Löhr, M. Martínez, J. Milewski, M. Milite, T. Monteiro, D. Notz, A. Pellegrino, F. Pelucchi, K. Piotrzkowski, M. Rohde, J. Roldán, J. J. Ryan, P. R.B. Saull, A. A. Savin, U. Schneekloth, O. Schwarzer, F. Selonke, S. Stonjek, B. Surrow, E. Tassi, D. Westphal, G. Wolf, U. Wollmer, C. Youngman, W. Zeuner, A. D. Burow, C. Coldewey, H. J. Grabosch, A. Meyer, S. Schlenstedt, G. Barbagli, E. Gallo, P. Pelfer, E. Maccarrone, L. Votano, A. Bamberger, S. Eisenhardt, P. Markun, H. Raach, T. Trefzger, S. Wölfle, J. T. Bromley, N. H. Brook, P. J. Bussey, A. T. Doyle, S. W. Lee, N. Macdonald, G. J. McCance, D. H. Saxon, L. E. Sinclair, I. O. Skillicorn, E. Strickland, R. Waugh, I. Bohnet, N. Gendner, U. Holm, A. Meyer-Larsen, H. Salehi, K. Wick, A. Garfagnini, L. K. Gladilin, D. Kçira, R. Klanner, E. Lohrmann, G. Poelz, F. Zetsche, T. C. Bacon, I. Butterworth, J. E. Cole, G. Howell, 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. Lim, I. H. Park, D. Son, F. Barreiro, J. P. Fernández, G. García, C. Glasman, J. M. Hernández, L. Hervás, L. Labarga, J. del Peso, J. Puga, J. Terrón, J. F. de Trocóniz, F. Corriveau, D. S. Hanna, J. Hartmann, W. N. Murray, A. Ochs, M. Riveline, D. G. Stairs, M. St-Laurent, T. Tsurugai, V. Bashkirov, B. A. Dolgoshein, A. Stifutkin, H. 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, J. Engelen, E. Koffeman, P. Kooijman, A. van Sighem, H. Tiecke, N. Tuning, W. Verkerke, J. Vossebeld, 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, 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, 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. Wichmann, D. C. Williams, 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, T. Nishimura, M. Arneodo, 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, K. K. Joo, G. M. Levman, J. F. Martin, R. S. Orr, S. Polenz, A. Sabetfakhri, D. Simmons, J. M. Butterworth, C. D. Catterall, M. E. Hayes, E. A. Heaphy, T. W. Jones, J. B. Lane, R. L. Saunders, M. R. Sutton, M. Wing, J. Ciborowski, G. Grzelak, R. J. Nowak, J. M. Pawlak, R. Pawlak, B. Smalska, T. Tymieniecka, A. K. Wróblewski, J. A. Zakrzewski, A. F. Zarnecki, M. Adamus, O. Deppe, 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 Bonn
  • University of California at Santa Cruz
  • University of Bristol
  • University of Calabria
  • Chonnam National University
  • Dongshin University
  • Columbia University
  • German Electron Synchrotron
  • Institute of Nuclear Physics
  • AGH University of Krakow
  • Jagiellonian University in Kraków
  • Innosoft
  • University of Crete
  • Massachusetts Institute of Technology
  • Florida State University
  • Dept. Física At. Mol. y Nuclear
  • CERN
  • Bayer AG
  • University of Florence
  • University of Freiburg
  • Ludwig Maximilian University of Munich
  • University of Glasgow
  • University of Hamburg
  • Imperial College London
  • University of Iowa
  • Applied Materials Incorporated
  • Jülich Research Centre
  • High Energy Accelerator Research Organization, Institute of Particle and Nuclear Physics
  • The University of Osaka
  • Korea University
  • Wayne State University
  • Kyungpook National University
  • Universidad Autónoma de Madrid
  • McGill University
  • Meiji Gakuin University
  • Moscow Engineering Physics Institute
  • Lomonosov Moscow State University
  • University of Amsterdam
  • Ohio State University
  • University of Florida
  • United States Department of Energy
  • University of Oxford
  • CSIRO
  • Pennsylvania State University
  • Polytechnic University Japan
  • University of Rome La Sapienza
  • STFC Rutherford Appleton Laboratory
  • Tel Aviv University
  • Brown University
  • The University of Tokyo
  • Tokyo Metropolitan University
  • Tokyo Metropolitan College of Industrial Technology
  • University of Turin
  • 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

87 Scopus citations

Abstract

Inclusive photoproduction of D mesons has been measured for photon-proton centre-of-mass energies in the range 130 < W < 28OGeV and photon virtuality Q2 < IGeV2. The data sample used corresponds to an integrated luminosity of 37 pb-1. Total and differential cross sections as functions of the D* transverse momentum and pseudorapidity are presented in restricted kinematical regions and the data are compared with next-to-leading order (NLO) perturbative QCD calculations using the "massive charm" and "massless charm" schemes. The measured cross sections are generally above the NLO calculations, in particular in the forward (proton) direction. The large data sample also allows the study of dijet production associated with charm. A significant resolved as well as a direct photon component contribute to the cross section. Leading order QCD Monte Carlo calculations indicate that the resolved contribution arises from a significant charm component in the photon. A massive charm NLO parton level calculation yields lower cross sections compared to the measured results in a kinematic region where the resolved photon contribution is significant.

Original languageEnglish
Pages (from-to)67-83
Number of pages17
JournalEuropean Physical Journal C
Volume6
Issue number1
DOIs
StatePublished - 1999

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