Ch. Chang et al., J PSI PRODUCTION ASSOCIATED WITH A HARD PHOTON AND THE COLOR-OCTET SIGNATURE IN E(+)E(-) ANNIHILATION/, Physical review. D. Particles and fields, 56(3), 1997, pp. 1363-1367
J/psi production associated with a hard photon in e(+)e(-) annihilatio
n, being of a QED nature, is investigated thoroughly in this paper. To
show its influence on the observation of the color-octet signature in
e(+)e(-) annihilation via J/psi inclusive production, the cross secti
ons of J/psi production through different mechanisms at various energi
es are compared quantitatively by presenting them in figures together.
The contribution from the production associated with a hard photon to
the inclusive production of J/psi is pointed out to be significant at
the concerned energies; thus, the influence of it on the observation
of the color-octet signature should be dealt with carefully.