Study of gluon GPDs in exclusive $J/\psi$ production in electron-proton scattering

S. V. Goloskokov, Ya-Ping Xie, Xurong Chen

Exclusive photoproduction of heavy $J/\psi$ meson is performed within handbag factorization method. The General Parton Distributions (GPDs) for gluons which are an essential ingredien…