  We calculate and resum the nuclear enhanced power corrections from the final
state partonic scattering in nuclear matter to open charm production and
correlations. In p+A reactions, we find that single and double inclusive D
mesons can be suppressed as much as the neutral pions from the dynamical high
twist shadowing. Effects of initial state energy loss in p+A collisions are
also investigated and may lead to significantly weaker transverse momentum
dependence of the nuclear suppression.
