Single inclusive hadron production at RHIC and the LHC from the color glass condensate

Using the unintegrated gluon distribution obtained from numerical simulations of the Balitsky–Kovchegov equation with running coupling, we obtain a very good description of RHIC data on single inclusive hadron production at forward rapidities in both p + p and d + Au collisions. No K-factors are needed for charged hadrons, whereas for pion production a rapidity independent K-factor of order 1/3 is needed. Extrapolating to LHC energies, we calculate nuclear modification factors for light hadrons in p + Pb collision, as well as the contribution of initial state effects to the suppression of the nuclear modification factor in Pb + Pb collisions.