NUCLEAR GENERALIZED PARTON DISTRIBUTIONS AND COHERENT NUCLEAR PROCESSES

We discuss nuclear generalized parton distributions that can be accessed in coherent hard exclusive processes with nuclei. We consider two examples of kinematics and relevant nuclear effects: medium values of Bjorken x(B), x(B) > 0.05, and the interplay of the coherent and incoherent nuclear deeply virtual Compton scattering (DVCS), and small values of x(B), x(B) < 0.05, where the leading twist nuclear shadowing significantly suppresses nuclear GPDs, which leads to clear experimental signals.