The Modified Intrinsic Charm Model And J/Psi Production in Hadronic Collisions

Abstract

Using the statistical approach additional light partons have been introduced in the Intrinsic Charm model. Explicit expressions are obtained for charmed and light quark distributions. A comparison is made with standard IC model predictions. It is shown that such a modification of the IC model leads to better agreement with the $pN$ and $\pi N$ data on $\JP$ production at low energies and allows to avoid a contradiction to experimental data at high energy.