  Using a multi-phase transport (AMPT) model, we study pseudo-rapidity
distributions and transverse momentum spectra in deuteron-gold collisions at
RHIC. We find that final-state partonic and hadronic interactions affect the
transverse momentum spectrum of protons more than those of kaons or pions.
Relative to p+p collisions at same center-of-mass energy per nucleon pair, the
effect of final-state interactions on the charged particle transverse momentum
spectra in d+Au collisions is much smaller than observed in experimental data,
indicating that initial-state effects such as the Cronin effect are important.
