Hadron production in the forward and backward rapidities in dAu   collisions at RHIC
  We have developed new techniques to detect hadrons with the PHENIX muon spectrometers. This allows us to study the centrality dependent nuclear modification factor $R_{CP}$ with high $p_{T}$ hadrons in both forward (d direction) and backward (Au direction) rapidities, $1 < |\eta| < 2$, in dAu collisions at $\sqrt{s_{NN}} = 200 GeV$. Preliminary results show a suppression (enhancement) of high $p_{T}$ hadron production in central $0-20%$ dAu collisions relative to the peripheral one ($60-88%$ in centrality) at forward (backward) rapidity. 
Ming Xiong Liu (for the PHENIX Collaboration)