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Multiparticle azimuthal correlations for extracting event-by-event elliptic and triangular flow in Au + Au collisions at sNN =200 GeV

  • Author(s): Adare, A;
  • Aidala, C;
  • Ajitanand, NN;
  • Akiba, Y;
  • Alfred, M;
  • Apadula, N;
  • Asano, H;
  • Azmoun, B;
  • Babintsev, V;
  • Bagoly, A;
  • Bai, M;
  • Bandara, NS;
  • Bannier, B;
  • Barish, KN;
  • Bathe, S;
  • Bazilevsky, A;
  • Beaumier, M;
  • Beckman, S;
  • Belmont, R;
  • Berdnikov, A;
  • Berdnikov, Y;
  • Blau, DS;
  • Boer, M;
  • Bok, JS;
  • Boyle, K;
  • Brooks, ML;
  • Bryslawskyj, J;
  • Bumazhnov, V;
  • Campbell, S;
  • Canoa Roman, V;
  • Chen, CH;
  • Chi, CY;
  • Chiu, M;
  • Choi, IJ;
  • Choi, JB;
  • Chujo, T;
  • Citron, Z;
  • Connors, M;
  • Csanád, M;
  • Csörgo, T;
  • Danley, TW;
  • Datta, A;
  • Daugherity, MS;
  • David, G;
  • Deblasio, K;
  • Dehmelt, K;
  • Denisov, A;
  • Deshpande, A;
  • Desmond, EJ;
  • Dion, A;
  • Diss, PB;
  • Do, JH;
  • Drees, A;
  • Drees, KA;
  • Durham, JM;
  • Durum, A;
  • Enokizono, A;
  • Esumi, S;
  • Fadem, B;
  • Fan, W;
  • Feege, N;
  • Fields, DE;
  • Finger, M;
  • Finger, M;
  • Fokin, SL;
  • Frantz, JE;
  • Franz, A;
  • Frawley, AD;
  • Gal, C;
  • Gallus, P;
  • Garg, P;
  • Ge, H;
  • Giordano, F;
  • Glenn, A;
  • Goto, Y;
  • Grau, N;
  • Greene, SV;
  • Grosse Perdekamp, M;
  • Gunji, T;
  • Hachiya, T;
  • Haggerty, JS;
  • Hahn, KI;
  • Hamagaki, H;
  • Hamilton, HF;
  • Han, SY;
  • Hanks, J;
  • Hasegawa, S;
  • Haseler, TOS;
  • Hashimoto, K;
  • He, X;
  • Hemmick, TK;
  • Hill, JC;
  • Hill, K;
  • Hodges, A;
  • Hollis, RS;
  • Homma, K;
  • Hong, B;
  • Hoshino, T;
  • Hotvedt, N;
  • Huang, J
  • et al.
Abstract

We present measurements of elliptic and triangular azimuthal anisotropy of charged particles detected at forward rapidity 1<|η|<3 in Au + Au collisions at sNN=200 GeV, as a function of centrality. The multiparticle cumulant technique is used to obtain the elliptic flow coefficients v2{2},v2{4},v2{6}, and v2{8}, and triangular flow coefficients v3{2} and v3{4}. Using the small-variance limit, we estimate the mean and variance of the event-by-event v2 distribution from v2{2} and v2{4}. In a complementary analysis, we also use a folding procedure to study the distributions of v2 and v3 directly, extracting both the mean and variance. Implications for initial geometrical fluctuations and their translation into the final-state momentum distributions are discussed.

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