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The BRAHMS collaboration has measured transverse momentum spectra of pions,kaons, protons and antiprotons at rapidities 0 and 3 for Cu+Cu collisions at$\sqrt{s_{NN}} = 200$ GeV. As the collisions become more central the collectiveradial flow increases while the temperature of kinetic freeze-out decreases.The temperature is lower and the radial flow weaker at forward rapidity. Pionand kaon yields with transverse momenta between 1.5 and 2.5 GeV/c aresuppressed for central collisions relative to scaled $p+p$ collisions. Thissuppression, which increases as the collisions become more central isconsistent with jet quenching models and is also present with comparablemagnitude at forward rapidity. At such rapidities initial state effects mayalso be present and persistence of the meson suppression to high rapidity mayreflect a combination of jet quenching and nuclear shadowing. The ratio ofprotons to mesons increases as the collisions become more central and islargest at forward rapidities.

Rapidity and centrality dependence of particle production for identified hadrons in Cu+Cu collisions at $\sqrt{s_{NN}} = 200$ GeV