Diffractive large transferred momentum photoproduction of vector mesons
arXiv:hep-ph/0311077 · doi:10.1140/epjc/s2004-01873-6
Abstract
The large $t$ behaviour of the helicity amplitudes of diffractive photoproduction is estimated relying on models of the photon and meson light-cone wave functions and on the double-logarithmic approximation to the exchanged gluon interaction. The role of large-size colour dipole contributions to the photon-meson transition impact factor is discussed.
13 pages LaTex, 3 figures, to appear in EPJC