Nuclear modification to parton distribution functions

We introduce a generalized definition of parton distribution functions (PDFs) for a more consistent all- order treatment of power corrections. We present a new set of modified DGLAP evolution equations for nuclear PDFs, and show that the resummed alpha(s)A(1/3)/Q(2)-type of leading nuclear size enhanced power corrections significantly slow down the growth of gluon density at small-x, and drive the slope of parton evolution to zero, a necessary condition for parton saturation.