  We determine rapidity asymmetry in the production of charged pions, protons
and anti-protons for large transverse momentum (pT) for d+Au collisions at
\sqrt s_NN = 200 GeV. The identified hadrons are measured in the rapidity
regions |y| < 0.5 and 0.5 < |y| < 1.0 for the pT range 2.5 < pT < 10 GeV/c. We
observe significant rapidity asymmetry for charged pion and proton+anti-proton
production in both rapidity regions. The asymmetry is larger for 0.5 < |y| <
1.0 than for |y|< 0.5 and is almost independent of particle type. The
measurements are compared to various model predictions employing multiple
scattering, energy loss, nuclear shadowing, saturation effects, and
recombination, and also to a phenomenological parton model. We find that
asymmetries are sensitive to model parameters and show model-preference. The
rapidity dependence of \pi^{-}/\pi^{+} and \bar{p}/p ratios in peripheral d+Au
and forward neutron-tagged events are used to study the contributions of
valence quarks and gluons to particle production at high pT. The results are
compared to calculations based on NLO pQCD and other measurements of quark
fragmentation functions.
