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1993 (EN)
Study of charm photoproduction mechanisms (EN)

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

N/A (EN)

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 x(F) and p(T)2 and various production ratios and charge asymmetries. The total non-diffractive open-charm cross-section per nucleon is measured to be sigma(gammaN-->ccXBAR) = 540 +/- 60 +/- 100 nb at [E(gamma)] = 100 GeV. We discuss the photoproduction of charm in terms of theoretical and phenomenological models. We compare the measured p(T)2 and x(F) distributions with first-order QCD calculations of photon-gluon fusion and obtain a value for the charm-quark mass of m(c) = 1.5(+0.2/-0.1) GeV/c2. (EN)

journalArticle

LIFETIMES (EN)
CROSS-SECTIONS (EN)
PARTON MODEL (EN)
PARTICLES (EN)
D+ (EN)
HADRON-NUCLEUS (EN)
J/PSI (EN)
FRAGMENTATION (EN)
D0 (EN)
COLLISIONS (EN)

Εθνικό Μετσόβιο Πολυτεχνείο (EL)
National Technical University of Athens (EN)

Zeitschrift für Physik C Particles and Fields (EN)

English

1993


Springer-Verlag (EN)



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