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You","submitted_at":"2014-04-07T18:14:24Z","abstract_excerpt":"We report on $J/\\psi$ production from asymmetric Cu+Au heavy-ion collisions at $\\sqrt{s_{_{NN}}}$=200 GeV at the Relativistic Heavy Ion Collider at both forward (Cu-going direction) and backward (Au-going direction) rapidities. The nuclear modification of $J/\\psi$ yields in Cu$+$Au collisions in the Au-going direction is found to be comparable to that in Au$+$Au collisions when plotted as a function of the number of participating nucleons. In the Cu-going direction, $J/\\psi$ production shows a stronger suppression. 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Hahn, K. Imai, K. Kurita, K.M. Kijima, K. Nakano, K.N. Barish, K.O. Eyser, K. Okada, K. Ozawa, K.R. Nakamura, K. Sedgwick, K. Shigaki, K. Shoji, K.S. Joo, K.S. Lee, K. Tanida, K. Watanabe, L. Ding, L. D'Orazio, L. Patel, M. Bai, M. Beaumier, M. Chiu, M. Csan\\'ad, M. Finger, M. Gonin, M. Grosse Perdekamp, M. Inaba, M.I. Nagy, M. Jezghani, M.J. Leitch, M.J. Tannenbaum, M. Kofarago, M. Kurosawa, M.L. Brooks, M. Leitgab, M.L. Purschke, M. Makek, M. McCumber, M. Mendoza, M. Moskowitz, M. Nihashi, M. Rosati, M.R. Stone, M. Sarsour, M.S. Daugherity, M. Shimomura, M. Skolnik, M. Slune\\v{c}ka, M. Soumya, M.S. Ryu, M. Stepanov, M. Tom\\'a\\v{s}ek, M. Vargyas, M. Virius, M. Wysocki, M.X. Liu, N. Apadula, N. Cronin, N. Crossette, N. Grau, N.N. Ajitanand, N. Novitzky, N. Riveli, N. Saito, O. Drapier, P. Christiansen, P. Garg, P.K. Khandai, P. Kline, P.K. Netrakanti, P.L. McGaughey, P. Sett, P. Shukla, P. Steinberg, P.W. Stankus, R. Akimoto, R.A. Soltz, R. Belmont, R. Granier de Cassagnac, R. 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