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Aidala, C; Aramaki, Y; Awes, T C; Baksay, G; Baublis, V; Bok, J S; Boyle, K; Brooks, M L; Chen, C-H; Choi, I J; Chujo, T; Chung, P; Cole, B A; Csanád, M; Dairaku, S; Danchev, I; Das, K; David, G; Deshpande, A; Dietzsch, O; Drees, A; Drees, K A; Efremenko, Y V; Engelmore, T; En'yo, H; Fokin, S L; Fukao, Y; Glenn, A; Gong, H; Hamblen, J; Hanks, J; Han, R; Heffner, M; Hegyi, S; Hill, J C; Hohlmann, M; Hornback, D; Ichimiya, R; Ide, J; Ikeda, Y; Ishihara, M; Ivanischev, D; Joo, K S; Kamihara, N; Kawall, D; Kawashima, M; Kim, B I; Kim, E J; Kistenev, E; Komkov, B; Kunde, G J; Kurita, K; Kyle, G S; Lee, K B; Leitch, M J; Liebing, P; Litvinenko, A; Makdisi, Y I; Manko, V I; Miake, Y; Mohanty, A K; Morino, Y; Morreale, A; Murata, J; Nagle, J L; Naglis, M; Nagy, M I; Nouicer, R; Ozawa, K; Park, W J; Pate, S F; Proissl, M; Read, K F; Rukoyatkin, P; Samsonov, V; Sano, S; Sawada, S; Sharma, D; Shimomura, M; Sickles, A; Slunecka, M; Sparks, N A; Sugitate, T; Sukhanov, A; Tanabe, R; Taranenko, A; Thomas, T L; Toia, A; Tserruya, I; Valle, H; van Hecke, H W; Vrba, V; Watanabe, D; Woody, C L; Yang, R; Yanovich, A; Young, G R; You, Z; Zajc, W A; Zhou, S
Physical review letters, 2010-Aug-06, Volume: 105, Issue: 6Journal Article
Differential measurements of the elliptic (v(2)) and hexadecapole (v(4)) Fourier flow coefficients are reported for charged hadrons as a function of transverse momentum (p(T)) and collision centrality or number of participant nucleons (N(part)) for Au+Au collisions at sq.rt(s(NN))=200 GeV. The v(2,4) measurements at pseudorapidity |η|≤0.35, obtained with four separate reaction-plane detectors positioned in the range 1.0<|η|<3.9, show good agreement, indicating the absence of significant Δη-dependent nonflow correlations. Sizable values for v(4)(p(T)) are observed with a ratio v(4)(p(T),N(part))/v(2)(2)(p(T),N(part))≈0.8 for 50≲N(part)≲200, which is compatible with the combined effects of a finite viscosity and initial eccentricity fluctuations. For N(part)≳200 this ratio increases up to 1.7 in the most central collisions.
