Study of charm photoproduction mechanisms

M. P. Alvarez, R. Barate, D. Bloch, P. Bonamy, P. Borgeaud, M. Burchell, H. Burmeister, J. M. Brunet, F. Calvino, M. Cattaneo, J. M. Crespo, B. d'Almagne, M. David, L. di Ciaccio, P. Druet, A. Duane, J. P. Engel, A. Ferrer, T. A. Filippas, E. FokitisR. W. Forty, P. Foucault, E. N. Gazis, J. P. Gerber, Y. Giomataris, G. Hall, T. Hofmokl, E. C. Katsoufis, M. Koratzinos, C. Krafft, B. Lefievre, Y. Lemoigne, A. Lopez, W. K. Lui, C. Magneville, A. Maltezos, J. G. McEwen, Th Papadopoulou, B. Pattison, D. Poutot, M. Primout, H. Rahmani, P. Roudeau, C. Seez, J. Six, R. Strub, D. Treille, P. Triscos, G. Tristram, G. Villet, A. Volte, M. Wayne, D. M. Websdale, G. Wormser, Y. Zolnierowski

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32 Citations (Scopus)

Abstract

This paper presents results on charm photoproduction in the energy interval 40 to 160 GeV, obtained from the high-statistics charm samples of the NA 14/2 experiment at CERN. We measure the charm cross-section, the distributions in xF and p2T and various production ratios and charge asymmetries. The total non-diffractive open-charm cross-section per nucleon is measured to be {Mathematical expression} at 〈Eγ〉 =100 GeV. We discuss the photoproduction of charm in terms of theoretical and phenomenological models. We compare the measured p2T and xF distributions with first-order QCD calculations of photon-gluon fusion and obtain a value for the charm-quark mass of mc=1.5+0.2-0.1GeV/c2. © 1993 Springer-Verlag.
Original languageEnglish
Pages (from-to)53-62
JournalZeitschrift für Physik C Particles and Fields
Volume60
Issue number1
DOIs
Publication statusPublished - 1 Mar 1993

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