We present measured J/ψ production rates in d+Au collisions at √sNN = 200 GeV over a broad range of transverse momentum (pT = 0–14 GeV/c) and rapidity (−2.2 < y < 2.2). We construct the nuclear-modification factor RdAu for these kinematics and as a function of collision centrality (related to impact parameter for the RdAu collision). We find that the modification is largest for collisions with small impact parameters, and observe a suppression (RdAu < 1) for pT < 4 GeV/c at positive rapidities. At negative rapidity we observe a suppression for pT < 2 GeV/c then an enhancement (RdAu > 1) for pT > 2 GeV/c. The observed enhancement at negative rapidity has implications for the observed modification in heavy-ion collisions at high pT.
Fields, Douglas E.. "Transverse-Momentum Dependence of the J/psi Nuclear Modification in d+ Au Collisions at sqrt (s_NN)= 200 GeV." (2012). https://digitalrepository.unm.edu/phyc_fsp/3