  We consider one loop corrections to single inclusive particle production in
parton-nucleus scattering at high energies, treating the target nucleus as a
Color Glass Condensate. We prove by explicit computation that in the leading
log Q^2 approximation, these corrections lead to collinear factorization and
DGLAP evolution of the projectile parton distribution and hadron fragmentation
functions. At leading logarithmic level, and in single-inclusive cross
sections, only two-point functions of Wilson lines in the adjoint and
fundamental representations (Mueller's dipoles) arise, which can be obtained
from the solution of the JIMWLK equations. The application of our results to
forward-rapidity production at RHIC energy shows that, in general, recoil
effects are large and that the forward rapidity region at RHIC is rather
different from the central region at LHC, despite comparable gluon densities in
the target. We show that both the quantum x-evolution of the high-density
target as well as the DGLAP Q^2-evolution of the parton distribution and
fragmentation functions are clearly seen in the BRAHMS data. This provides
additional strong evidence for the Color Glass Condensate at RHIC.
