Exclusive photoproduction of charmonia in $\gamma p\to Vp$ and $pp\to pVp$ reactions within $k_t$-factorization approach

Anna Cisek, Wolfgang Schäfer, Antoni Szczurek

The amplitude for $\gamma p\to J/\psi p$ ($\gamma p\to {\psi }^{\prime }p$) is calculated in a pQCD $k_T$-factorization approach. The total cross section for this process is calculated for different uninteg…