Cold nuclear modifications at RHIC and LHC

We use recent nuclear parton distributions, among them the Hirai - Kumano - Nagai (HKN) and Eskola - Paukkunen - Salgado (EPS08) parameterizations, in our pQCD-improved parton model to calculate the nuclear modification factor, R(AA). (p(T)), at RHIC and at the LHC. At RHIC, the deuteron-gold nuclear modification factor for pions, measured at p(T) >= 10 GeV/c in central collisions, appears to deviate more from unity than the model results. The slopes of the calculated R(dAu)(p(T)) are similar to the slopes of the PHENIX pion and photon data. At LHC, without final-state effects we see a small enhancement of R(dPb)(p(T)) in the transverse momentum range 10 GeV/c >= p(T) >= 100 GeV/c for most parameterizations. The inclusion of final-state energy loss will reduce the R(dPb)(p(T))values.