J/ΨN and Psi' N total cross sections from photoproduction data: failure of vector dominance

Joerg Huefner, B. Z. Kopeliovich

Values for the cross sections ${\sigma }_{tot}^{\Psi N}$ and ${\sigma }_{tot}^{{\Psi }^{\prime }N}$ are of crucial importance, once one wants to understand nuclear suppression of $J/\Psi$(${\Psi }^{\prime }$) in a search for the qua…