  We study single inclusive hadron production in proton-proton and
proton-nucleus collisions in the CGC framework. The parameters in the
calculation are obtained by fitting electron-proton deep inelastic scattering
data. The obtained dipole-proton amplitude is generalized to dipole-nucleus
scattering without any additional nuclear parameters other than the Woods-Saxon
distribution. We show that it is possible to use an initial condition without
an anomalous dimension and still obtain a good description of the HERA
inclusive cross section and LHC single particle production measurements. We
argue that one must consistently use the proton transverse area as measured by
a high virtuality probe in DIS also for the single inclusive cross section in
proton-proton and proton-nucleus collisions, and obtain a nuclear modification
factor $R_{pA}$ that at midrapidity approaches unity at large momenta and at
all energies.
