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We determine rapidity asymmetry in the production of charged pions, protonsand anti-protons for large transverse momentum (pT) for d+Au collisions at\sqrt s_NN = 200 GeV. The identified hadrons are measured in the rapidityregions |y| < 0.5 and 0.5 < |y| < 1.0 for the pT range 2.5 < pT < 10 GeV/c. Weobserve significant rapidity asymmetry for charged pion and proton+anti-protonproduction 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. Themeasurements are compared to various model predictions employing multiplescattering, energy loss, nuclear shadowing, saturation effects, andrecombination, and also to a phenomenological parton model. We find thatasymmetries are sensitive to model parameters and show model-preference. Therapidity dependence of \pi^{-}/\pi^{+} and \bar{p}/p ratios in peripheral d+Auand forward neutron-tagged events are used to study the contributions ofvalence quarks and gluons to particle production at high pT. The results arecompared to calculations based on NLO pQCD and other measurements of quarkfragmentation functions.

physical review. c. nuclear physics/physical review. c, nuclear physics

Rapidity and species dependence of particle production at large transverse momentum for<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>d</mml:mi><mml:mo>+</mml:mo><mml:mi mathvariant="normal">Au</mml:mi></mml:mrow></mml:math>collisions at<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msqrt><mml:mrow><mml:msub><mml:mi>s</mml:mi><mml:mrow><mml:mi mathvariant="italic">NN</mml:mi></mml:mrow></mml:msub></mml:mrow…

Rapidity and species dependence of particle production at large transverse momentum ford+Aucollisions atsNN