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Study of the effective transverse momentum of partons in the proton using prompt photons in photoproduction at HERA

  • S. Chekanov
  • , M. Derrick
  • , D. Krakauer
  • , S. Magill
  • , B. Musgrave
  • , A. Pellegrino
  • , J. Repond
  • , R. Stanek
  • , R. Yoshida
  • , M. C.K. Mattingly
  • , P. Antonioli
  • , G. Bari
  • , M. Basile
  • , L. Bellagamba
  • , D. Boscherini
  • , A. Bruni
  • , G. Bruni
  • , G. Cara Romeo
  • , L. Cifarelli
  • , F. Cindolo
  • A. Contin, M. Corradi, S. de Pasquale, P. Giusti, G. Iacobucci, G. Levi, A. Margotti, T. Massam, R. Nania, F. Palmonari, A. Pesci, G. Sartorelli, A. Zichichi, G. Aghuzumtsyan, I. Brock, S. Goers, H. Hartmann, E. Hilger, P. Irrgang, H. P. Jakob, A. Kappes, U. F. Katz, R. Kerger, O. Kind, E. Paul, J. Rautenberg, H. Schnurbusch, A. Stifutkin, J. Tandler, K. C. Voss, A. Weber, H. Wieber, D. S. Bailey, N. H. Brook, J. E. Cole, B. Foster, G. P. Heath, H. F. Heath, S. Robins, E. Rodrigues, J. Scott, R. J. Tapper, M. Capua, A. Mastroberardino, M. Schioppa, G. Susinno, H. Y. Jeoung, J. Y. Kim, J. H. Lee, I. T. Lim, K. J. Ma, M. Y. Pac, A. Caldwell, M. Helbich, W. Liu, X. Liu, B. Mellado, S. Paganis, S. Sampson, W. B. Schmidke, F. Sciulli, J. Chwastowski, A. Eskreys, J. Figiel, K. Klimek, K. Olkiewicz, M. B. Przybycień, P. Stopa, L. Zawiejski, B. Bednarek, K. Jeleń, D. Kisielewska, A. M. Kowal, T. Kowalski, E. Rulikowska-Zarebska, L. Suszycki, D. Szuba, A. Kotański, L. A.T. Bauerdick, U. Behrens, K. Borras, V. Chiochia, J. Crittenden, D. Dannheim, K. Desler, G. Drews, A. Fox-Murphy, U. Fricke, A. Geiser, F. Goebel, P. Göttlicher, R. Graciani, T. Haas, W. Hain, G. F. Hartner, K. Hebbel, S. Hillert, W. Koch, U. Kötz, H. Kowalski, H. Labes, B. Löhr, R. Mankel, J. Martens, M. Martínez, M. Milite, M. Moritz, D. Notz, M. C. Petrucci, A. Polini, A. A. Savin, U. Schneekloth, F. Selonke, S. Stonjek, G. Wolf, U. Wollmer, J. J. Whitmore, R. Wichmann, C. Youngman, W. Zeuner, C. Coldewey, A. Lopez-Duran Viani, A. Meyer, S. Schlenstedt, G. Barbagli, E. Gallo, A. Parenti, P. G. Pelfer, A. Bamberger, A. Benen, N. Coppola, P. Markun, H. Raach, S. Wölfle, M. Bell, P. J. Bussey, A. T. Doyle, C. Glasman, S. W. Lee, A. Lupi, G. J. McCance, D. H. Saxon, I. O. Skillicorn, B. Bodmann, N. Gendner, U. Holm, H. Salehi, K. Wick, A. Yildirim, A. Ziegler, T. Carli, A. Garfagnini, I. Gialas, E. Lohrmann, C. Foudas, R. Gonçalo, K. R. Long, F. Metlica, D. B. Miller, A. D. Tapper, R. Walker, P. Cloth, D. Filges, T. Ishii, M. Kuze, K. Nagano, K. Tokushuku, S. Yamada, Y. Yamazaki, A. N. Barakbaev, E. G. Boos, N. S. Pokrovskiy, B. O. Zhautykov, S. H. Ahn, S. B. Lee, S. K. Park, H. Lim, D. Son, F. Barreiro, G. García, O. González, L. Labarga, J. del Peso, I. Redondo, J. Terrón, M. Vázquez, M. Barbi, F. Corriveau, S. Padhi, D. G. Stairs, M. Wing, T. Tsurugai, A. Antonov, V. Bashkirov, P. Danilov, B. A. Dolgoshein, D. Gladkov, V. Sosnovtsev, S. Suchkov, R. K. Dementiev, P. F. Ermolov, Yu A. Golubkov, I. I. Katkov, L. A. Khein, N. A. Korotkova, I. A. Korzhavina, V. A. Kuzmin, B. B. Levchenko, O. Yu Lukina, A. S. Proskuryakov, L. M. Shcheglova, A. N. Solomin, N. N. Vlasov, S. A. Zotkin, C. Bokel, M. Botje, J. Engelen, S. Grijpink, E. Koffeman, P. Kooijman, S. Schagen, A. van Sighem, E. Tassi, H. Tiecke, N. Tuning, J. J. Velthuis, J. Vossebeld, L. Wiggers, E. de Wolf, N. Brümmer, B. Bylsma, L. S. Durkin, J. Gilmore, C. M. Ginsburg, C. L. Kim, T. Y. Ling, S. Boogert, A. M. Cooper-Sarkar, R. C.E. Devenish, J. Ferrando, J. Grobe-Knetter, T. Matsushita, M. Rigby, O. Ruske, M. R. Sutton, R. Walczak, A. Bertolin, R. Brugnera, R. Carlin, F. Dal Corso, S. Dusini, S. Limentani, A. Longhin, M. Posocco, L. Stanco, M. Turcato, L. Adamczyk, L. Iannotti, B. Y. Oh, P. R.B. Saull, W. S. Toothacker, Y. Iga, G. D'Agostini, G. Marini, A. Nigro, C. Cormack, J. C. Hart, N. A. McCubbin, D. Epperson, C. Heusch, H. F.W. Sadrozinski, A. Seiden, D. C. Williams, I. H. Park, N. Pavel, H. Abramowicz, S. Dagan, A. Gabareen, S. Kananov, A. Kreisel, A. Levy, T. Abe, T. Fusayasu, T. Kohno, K. Umemori, T. Yamashita, R. Hamatsu, T. Hirose, M. Inuzuka, S. Kitamura, K. Matsuzawa, T. Nishimura, M. Arneodo, N. Cartiglia, R. Cirio, M. Costa, M. I. Ferrero, S. Maselli, V. Monaco, C. Peroni, M. Ruspa, R. Sacchi, A. Solano, A. Staiano, D. C. Bailey, C. P. Fagerstroem, R. Galea, T. Koop, G. M. Levman, J. F. Martin, A. Mirea, A. Sabetfakhri, J. M. Butterworth, C. Gwenlan, M. E. Hayes, E. A. Heaphy, T. W. Jones, J. B. Lane, B. J. West, J. Ciborowski, R. Ciesielski, G. Grzelak, R. J. Nowak, J. M. Pawlak, P. Plucinski, B. Smalska, J. Sztuk, T. Tymieniecka, J. Ukleja, J. A. Zakrzewski, A. F. Zarnecki, M. Adamus, O. Deppe, Y. Eisenberg, L. K. Gladilin, D. Hochman, U. Karshon, J. Breitweg, D. Chapin, R. Cross, D. Kçira, S. Lammers, D. D. Reeder, W. H. Smith, A. Deshpande, S. Dhawan, V. W. Hughes, P. B. Straub, S. Bhadra, C. D. Catterall, W. R. Frisken, R. Hall-Wilton, M. Khakzad, S. Menary
  • Argonne National Laboratory
  • Andrews University
  • National Institute for Nuclear Physics
  • University of Salerno
  • University of Bonn
  • University of Bristol
  • University of Calabria
  • Chonnam National University
  • Dongshin University
  • Columbia University
  • Institute of Nuclear Physics
  • AGH University of Krakow
  • Northwestern University
  • Jagiellonian University in Kraków
  • German Electron Synchrotron
  • Fermi National Accelerator Laboratory
  • Pennsylvania State University
  • University of Florence
  • University of Freiburg
  • University of Glasgow
  • University of Hamburg
  • University of the Aegean
  • Imperial College London
  • Jülich Research Centre
  • High Energy Accelerator Research Organization, Institute of Particle and Nuclear Physics
  • The University of Tokyo
  • Ministry of Education and Science of the Republic of Kazakhstan
  • Korea University
  • Kyungpook National University
  • Universidad Autónoma de Madrid
  • McGill University
  • Meiji Gakuin University
  • Moscow Engineering Physics Institute
  • Loma Linda University Health
  • Lomonosov Moscow State University
  • University of Amsterdam
  • Ohio State University
  • University of Oxford
  • CERN
  • University of Padua
  • Polytechnic University Japan
  • University of Rome La Sapienza
  • STFC Rutherford Appleton Laboratory
  • University of California at Santa Cruz
  • Seoul National University
  • University of Siegen
  • Tel Aviv University
  • Tokyo Metropolitan University
  • University of Turin
  • University of Eastern Piedmont
  • University of Toronto
  • University College London
  • University of Warsaw
  • University of Lodz
  • Institute of Nuclear Chemistry and Technology, Warsaw
  • Weizmann Institute of Science
  • Evotec, AG
  • University of Wisconsin-Madison
  • Yale University
  • York University Toronto

Research output: Contribution to journalArticlepeer-review

43 Scopus citations

Abstract

The photoproduction of prompt photons, together with an accompanying jet, has been measured with the ZEUS detector at HERA using an integrated luminosity of 38.6 pb-1. A study of the effective transverse momentum, (kT), of partons in the proton, as modelled within the framework of the PYTHIA Monte Carlo, gives a value of (kT) = 1.69 ± 0.18 -0.20 +0.18 GeV for the γp centre-of-mass energy range 134 < W < 251 GeV. This result is in agreement with the previously observed trend in hadron-hadron scattering for (kT) to rise with interaction energy.

Original languageEnglish
Pages (from-to)19-32
Number of pages14
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume511
Issue number1
DOIs
StatePublished - Jun 28 2001

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