  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.
