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  • Cold-nuclear-matter effects on heavy-quark production at forward and backward rapidity in d + Au collisions at √sNN = 200  GeV
    Alexander, J; Angerami, A; Appelt, E; Atomssa, E T; Basye, A T; Baumann, C; Bhom, J H; Brooks, M L; Buesching, H; Bunce, G; Campbell, S; Caringi, A; Cianciolo, V; Cole, B A; Das, K; Datta, A; Dion, A; Donadelli, M; Drees, K A; D'Orazio, L; Ellinghaus, F; Fields, D E; Finger, Jr, M; Fokin, S L; Frantz, J E; Gong, X; Gonin, M; Greene, S V; Grim, G; Hamagaki, H; Hamblen, J; Hashimoto, K; Hemmick, T K; Homma, K; Iinuma, H; Inaba, M; Iordanova, A; Jia, J; Jumper, D S; Kajihara, F; Kamin, J; Kawashima, M; Kempel, T; Kim, D J; Kim, E-J; Kinney, E; Kistenev, E; Kleinjan, D; Kline, P; Lacey, R; Lee, J; Lee, K B; Lee, S H; Lee, S R; Linden Levy, L A; Maguire, C F; McKinney, C; Mendoza, M; Miki, K; Miyachi, Y; Moon, H J; Morreale, A; Morrison, D P; Nakamura, K R; Nam, S; Ogilvie, C A; Okada, K; Papavassiliou, V; Park, I H; Park, S K; Pei, H; Pereira, H; Rosendahl, S S E; Ružička, P; Samsonov, V; Sarsour, M; Savastio, M; Seidl, R; Sharma, D; Shigaki, K; Shukla, P; Silvermyr, D; Silvestre, C; Singh, V; Sodre, T; Sourikova, I V; Stenlund, E; Tanida, K; Thomas, T L; Tserruya, I; Utsunomiya, K; Veicht, A; Vértesi, R; Watanabe, D; Wessels, J; Yamaguchi, Y L; Yanovich, A; Young, G R; Younus, I; Yushmanov, I E

    Physical review letters, 2014-Jun-27, 20140627, Volume: 112, Issue: 25
    Journal Article

    The PHENIX experiment has measured open heavy-flavor production via semileptonic decay over the transverse momentum range 1 < p(T) < 6  GeV/c at forward and backward rapidity (1.4 < |y| < 2.0) in d+Au and p + p collisions at √sNN = 200  GeV. In central d+Au collisions, relative to the yield in p + p collisions scaled by the number of binary nucleon-nucleon collisions, a suppression is observed at forward rapidity (in the d-going direction) and an enhancement at backward rapidity (in the Au-going direction). Predictions using nuclear-modified-parton-distribution functions, even with additional nuclear-p(T) broadening, cannot simultaneously reproduce the data at both rapidity ranges, which implies that these models are incomplete and suggests the possible importance of final-state interactions in the asymmetric d + Au collision system. These results can be used to probe cold-nuclear-matter effects, which may significantly affect heavy-quark production, in addition to helping constrain the magnitude of charmonia-breakup effects in nuclear matter.

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