Exclusive Production of Quarkonia in $pp$ and $p\bar{p}$ Collisions Far from the Threshold

Abstract

I discuss exclusive production of the ${\eta }^{\prime }$, $J/\psi$, and ${\chi }_c(0^{+})$ mesons in $pp$ and $p\bar{p}$ collisions at high energies. QCD diffractive mechanisms as well as nondiffractive mechanisms are discussed. Different unintegrated gluon distribution functions (UGDF) are used. Some differential distributions are shown and discussed.

Comments: 7 pages and 6 figures a talk at the "11th International Conference on Meson-Nucleon Physics and the Structure of the Nucleon" (MENU 2007), September 10-14, 2007, Juelich, Germany