A Measurement of Elastic J/psi Photoproduction Cross Section at Fermilab
by P.L. Frabetti et al.
Measurements of elastic photoproduction cross sections for the J/psi meson
from 100 GeV to 375 GeV are presented. The results indicate that the
cross section increases slowly in this range. The shape of the energy
dependence agrees well with the photon-gluon fusion model prediction.