Charged particle cross sections in photoproduction and extraction of the gluon density in the photon

C. Adloff, M. Anderson, V. Andreev, B. Andrieu, V. Arkadov, C. Arndt, I. Ayyaz, A. Babaev, J. Bähr, J. Bán, P. Baranov, E. Barrelet, W. Bartel, U. Bassler, P. Bate, M. Beck, A. Beglarian, O. Behnke, H. J. Behrend, C. BeierA. Belousov, Ch Berger, G. Bernardi, G. Bertrand-Coremans, P. Biddulph, J. C. Bizot, V. Boudry, W. Braunschweig, V. Brisson, D. P. Brown, W. Brückner, P. Bruel, D. Bruncko, J. Burger, F. W. Büsser, A. Buniatian, S. Burke, G. Buschhorn, D. Calvet, A. J. Campbell, T. Carli, E. Chabert, M. Charlet, D. Clarke, B. Clerbaux, S. Cocks, J. G. Contreras, C. Cormack, J. A. Coughlan, M. C. Cousinou, B. E. Cox, G. Cozzika, J. Cvach, J. B. Dainton, W. D. Dau, K. Daum, M. David, M. Davidsson, A. de Roeck, E. A. de Wolf, B. Delcourt, R. Demirchyan, C. Diaconu, M. Dirkmann, P. Dixon, W. Dlugosz, K. T. Donovan, J. D. Dowell, A. Droutskoi, J. Ebert, G. Eckerlin, D. Eckstein, V. Efremenko, S. Egli, R. Eichler, F. Eisele, E. Eisenhandler, E. Elsen, M. Enzenberger, M. Erdmann, A. B. Fahr, L. Favart, A. Fedotov, R. Felst, J. Feltesse, J. Ferencei, F. Ferrarotto, M. Fleischer, G. Flügge, A. Fomenko, J. Formánek, J. M. Foster, G. Franke, E. Gabathuler, K. Gabathuler, F. Gaede, J. Garvey, J. Gayler, R. Gerhards, S. Ghazaryan, A. Glazov, L. Goerlich, N. Gogitidze, M. Goldberg, I. Gorelov, C. Grab, H. Grässler, T. Greenshaw, R. K. Griffiths, G. Grindhammer, T. Hadig, D. Haidt, L. Hajduk, T. Haller, M. Hampel, V. Haustein, W. J. Haynes, B. Heinemann, G. Heinzelmann, R. C W Henderson, S. Hengstmann, H. Henschel, R. Heremans, I. Herynek, K. Hewitt, K. H. Hiller, C. D. Hilton, J. Hladký, D. Hoffmann, T. Holtom, W. Hoprich, R. Horisberger, V. L. Hudgson, S. Hurling, M. Ibbotson, C. Işsever, H. Itterbeck, M. Jacquet, M. Jaffre, D. M. Jansen, L. Jönsson, D. P. Johnson, H. Jung, H. K. Kästli, M. Kander, D. Kant, M. Kapichine, M. Karlsson, O. Karschnik, J. Katzy, O. Kaufmann, M. Kausch, I. R. Kenyon, S. Kermiche, C. Keuker, C. Kiesling, M. Klein, C. Kleinwort, G. Knies, J. H. Köhne, H. Kolanoski, S. D. Kolya, V. Korbel, P. Kostka, S. K. Kotelnikov, T. Krämerkämper, M. W. Krasny, H. Krehbiel, D. Krücker, K. Krüger, A. Küpper, H. Küster, M. Kuhlen, T. Kurča, B. Laforge, R. Lahmann, M. P J Landon, W. Lange, U. Langenegger, A. Lebedev, F. Lehner, V. Lemaitre, V. Lendermann, S. Levonian, M. Lindstroem, B. List, G. Lobo, E. Lobodzinska, V. Lubimov, D. Lüke, L. Lytkin, N. Magnussen, H. Mahlke-Krüger, E. Malinovski, R. Maraček, P. Marage, J. Marks, R. Marshall, G. Martin, H. U. Martyn, J. Martyniak, S. J. Maxfield, S. J. McMahon, T. R. McMahon, A. Mehta, K. Meier, P. Merkel, F. Metlica, A. Meyer, H. Meyer, J. Meyer, P. O. Meyer, S. Mikocki, D. Milstead, J. Moeck, R. Mohr, S. Mohrdieck, F. Moreau, J. V. Morris, D. Müller, K. Müller, P. Murín, V. Nagovizin, B. Naroska, Th Naumann, I. Négri, P. R. Newman, H. K. Nguyen, T. C. Nicholls, F. Niebergall, C. Niebuhr, Ch Niedzballa, H. Niggli, D. Nikitin, O. Nix, G. Nowak, T. Nunnemann, H. Oberlack, J. E. Olsson, D. Ozerov, P. Palmen, V. Panassik, C. Pascaud, S. Passaggio, G. D. Patel, H. Pawletta, E. Perez, J. P. Phillips, A. Pieuchot, D. Pitzl, R. Pöschl, G. Pope, B. Povh, K. Rabbertz, J. Rauschenberger, P. Reimer, B. Reisert, H. Rick, S. Riess, E. Rizvi, P. Robmann, R. Roosen, K. Rosenbauer, A. Rostovtsev, F. Rouse, C. Royon, S. Rusakov, K. Rybicki, D. P C Sankey, P. Schacht, J. Scheins, S. Schleif, P. Schleper, D. Schmidt, L. Schoeffel, V. Schröder, H. C. Schultz-Coulon, B. Schwab, F. Sefkow, A. Semenov, V. Shekelyan, I. Sheviakov, L. N. Shtarkov, G. Siegmon, Y. Sirois, T. Sloan, P. Smirnov, M. Smith, V. Solochenko, Y. Soloviev, V. Spaskov, A. Specka, J. Spiekermann, H. Spitzer, F. Squinabol, P. Steffen, R. Steinberg, J. Steinhart, B. Stella, A. Stellberger, J. Stiewe, U. Straumann, W. Struczinski, J. P. Sutton, M. Swart, S. Tapprogge, M. Taševský, V. Tchernyshov, S. Tchetchelnitski, J. Theissen, G. Thompson, P. D. Thompson, N. Tobien, R. Todenhagen, P. Truöl, G. Tsipolitis, J. Turnau, E. Tzamariudaki, S. Udluft, A. Usik, S. Valkár, A. Valkárová, C. Vallée, P. van Esch, A. van Haecke, P. van Mechelen, Y. Vazdik, G. Villet, K. Wacker, R. Wallny, T. Walter, B. Waugh, G. Weber, M. Weber, D. Wegener, A. Wegner, T. Wengler, M. Werner, L. R. West, S. Wiesand, T. Wilksen, S. Willard, M. Winde, G. G. Winter, C. Wittek, E. Wittmann, M. Wobisch, H. Wollatz, E. Wünsch, J. Žáček, J. Zálešák, Z. Zhang, A. Zhokin, P. Zini, F. Zomer

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Photoproduction data collected with the H1 detector at HERA in 1994 are used to study the cross-sections for inclusive charged particle production and the structure of the photon. The differential cross-sections dσ/dp2T, for |η| <1 in the HERA laboratory frame, and dσ/dη for PT > 2GeV/c and PT > 3 GeV/c have been measured. Model calculations of these cross-sections, based on perturbative QCD, indicate that the results are sensitive to the parton densities of the photon as well as to higher order effects, which are phenomenologically treated by multiple interactions. This sensitivity is exploited to determine the leading order cursive Greek chiγ distribution of partons in the photon using a new method based on high PT charged particles. The gluon content of the photon is extracted and found to rise with decreasing cursive Greek chiγ.
    Original languageEnglish
    Pages (from-to)363-372
    Number of pages9
    JournalEuropean Physical Journal C
    Volume10
    Issue number3
    DOIs
    Publication statusPublished - 1999

    Fingerprint

    Dive into the research topics of 'Charged particle cross sections in photoproduction and extraction of the gluon density in the photon'. Together they form a unique fingerprint.

    Cite this