Charmonium absorption by nucleons

$J/\Psi$ dissociation in collisions with nucleons is studied within a boson-exchange model and the energy dependence of the dissociation cross section is calculated from the threshold for ${\Lambda }_c\overline{D}$ production to high energies. We illustrate the agreement of our results with calculations based on short-distance QCD and Regge theory. The compatibility between our calculations and the data on $J/\Psi$ photoproduction on a nucleon is discussed. We evaluate the elastic $J/\Psi +N$ cross section using a dispersion relation and demonstrate the overall agreement with the predictions from QCD sum rules. Our results are compatible with the phenomenological dissociation cross section evaluated from the experimental data on $J/\Psi$ production from $\gamma +A,$ $p+A,$ and $A+A$ collisions.