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arxiv: 1003.5586 · v2 · submitted 2010-03-29 · ⚛️ nucl-ex

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Elliptic and hexadecapole flow of charged hadrons in Au+Au collisions at sqrt(s_NN) = 200 GeV

A. Adare , S. Afanasiev , C. Aidala , N.N. Ajitanand , Y. Akiba , H. Al-Bataineh , J. Alexander , K. Aoki
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Y. Aramaki E.T. Atomssa R. Averbeck T.C. Awes B. Azmoun V. Babintsev M. Bai G. Baksay L. Baksay K.N. Barish B. Bassalleck A.T. Basye S. Bathe V. Baublis C. Baumann A. Bazilevsky S. Belikov R. Belmont R. Bennett A. Berdnikov Y. Berdnikov A.A. Bickley J.S. Bok K. Boyle M.L. Brooks H. Buesching V. Bumazhnov G. Bunce S. Butsyk C.M. Camacho S. Campbell C.-H. Chen C.Y. Chi M. Chiu I.J. Choi R.K. Choudhury P. Christiansen T. Chujo P. Chung O. Chvala V. Cianciolo Z. Citron B.A. Cole M. Connors P. Constantin M. Csan\'ad T. Cs\"org\H{o} T. Dahms S. Dairaku I. Danchev K. Das A. Datta G. David A. Denisov A. Deshpande E.J. Desmond O. Dietzsch A. Dion M. Donadelli O. Drapier A. Drees K.A. Drees J.M. Durham A. Durum D. Dutta S. Edwards Y.V. Efremenko F. Ellinghaus T. Engelmore A. Enokizono H. En'yo S. Esumi B. Fadem D.E. Fields M. Finger Jr. M. Finger F. Fleuret S.L. Fokin Z. Fraenkel J.E. Frantz A. Franz A.D. Frawley K. Fujiwara Y. Fukao T. Fusayasu I. Garishvili A. Glenn H. Gong M. Gonin Y. Goto R. Granier de Cassagnac N. Grau S.V. Greene M. Grosse Perdekamp T. Gunji H.-{\AA}. Gustafsson J.S. Haggerty K.I. Hahn H. Hamagaki J. Hamblen J. Hanks R. Han E.P. Hartouni E. Haslum R. Hayano M. Heffner S. Hegyi T.K. Hemmick T. Hester X. He J.C. Hill M. Hohlmann W. Holzmann K. Homma B. Hong T. Horaguchi D. Hornback S. Huang T. Ichihara R. Ichimiya J. Ide Y. Ikeda K. Imai M. Inaba D. Isenhower M. Ishihara T. Isobe M. Issah A. Isupov D. Ivanischev B.V. Jacak J. Jia J. Jin B.M. Johnson K.S. Joo D. Jouan D.S. Jumper F. Kajihara S. Kametani N. Kamihara J. Kamin J.H. Kang J. Kapustinsky D. Kawall M. Kawashima A.V. Kazantsev T. Kempel A. Khanzadeev K.M. Kijima B.I. Kim D.H. Kim D.J. Kim E.J. Kim E. Kim S.H. Kim Y.J. Kim E. Kinney K. Kiriluk \'A. Kiss E. Kistenev L. Kochenda B. Komkov M. Konno J. Koster D. Kotchetkov A. Kozlov A. Kr\'al A. Kravitz G.J. Kunde K. Kurita M. Kurosawa Y. Kwon G.S. Kyle R. Lacey Y.S. Lai J.G. Lajoie A. Lebedev D.M. Lee J. Lee K.B. Lee K. Lee K.S. Lee M.J. Leitch M.A.L. Leite E. Leitner B. Lenzi P. Liebing L.A. Linden Levy T. Li\v{s}ka A. Litvinenko H. Liu M.X. Liu X. Li B. Love R. Luechtenborg D. Lynch C.F. Maguire Y.I. Makdisi A. Malakhov M.D. Malik V.I. Manko E. Mannel Y. Mao H. Masui F. Matathias M. McCumber P.L. McGaughey N. Means B. Meredith Y. Miake A.C. Mignerey P. Mike\v{s} K. Miki A. Milov M. Mishra J.T. Mitchell A.K. Mohanty Y. Morino A. Morreale D.P. Morrison T.V. Moukhanova J. Murata S. Nagamiya J.L. Nagle M. Naglis M.I. Nagy I. Nakagawa Y. Nakamiya T. Nakamura K. Nakano J. Newby M. Nguyen R. Nouicer A.S. Nyanin E. O'Brien S.X. Oda C.A. Ogilvie K. Okada M. Oka Y. Onuki A. Oskarsson M. Ouchida K. Ozawa R. Pak V. Pantuev V. Papavassiliou I.H. Park J. Park S.K. Park W.J. Park S.F. Pate H. Pei J.-C. Peng H. Pereira V. Peresedov D.Yu. Peressounko C. Pinkenburg R.P. Pisani M. Proissl M.L. Purschke A.K. Purwar H. Qu J. Rak A. Rakotozafindrabe I. Ravinovich K.F. Read K. Reygers V. Riabov Y. Riabov E. Richardson D. Roach G. Roche S.D. Rolnick M. Rosati C.A. Rosen S.S.E. Rosendahl P. Rosnet P. Rukoyatkin P. Ru\v{z}i\v{c}ka B. Sahlmueller N. Saito T. Sakaguchi K. Sakashita V. Samsonov S. Sano T. Sato S. Sawada K. Sedgwick J. Seele R. Seidl A.Yu. Semenov R. Seto D. Sharma I. Shein T.-A. Shibata K. Shigaki M. Shimomura K. Shoji P. Shukla A. Sickles C.L. Silva D. Silvermyr C. Silvestre K.S. Sim B.K. Singh C.P. Singh V. Singh M. Slune\v{c}ka R.A. Soltz W.E. Sondheim S.P. Sorensen I.V. Sourikova N.A. Sparks P.W. Stankus E. Stenlund S.P. Stoll T. Sugitate A. Sukhanov J. Sziklai E.M. Takagui A. Taketani R. Tanabe Y. Tanaka K. Tanida M.J. Tannenbaum S. Tarafdar A. Taranenko P. Tarj\'an H. Themann T.L. Thomas M. Togawa A. Toia L. Tom\'a\v{s}ek H. Torii R.S. Towell I. Tserruya Y. Tsuchimoto C. Vale H. Valle H.W. van Hecke E. Vazquez-Zambrano A. Veicht J. Velkovska R. V\'ertesi A.A. Vinogradov M. Virius V. Vrba E. Vznuzdaev X.R. Wang D. Watanabe K. Watanabe Y. Watanabe F. Wei R. Wei J. Wessels S.N. White D. Winter J.P. Wood C.L. Woody R.M. Wright M. Wysocki W. Xie Y.L. Yamaguchi K. Yamaura R. Yang A. Yanovich J. Ying S. Yokkaichi G.R. Young I. Younus Z. You I.E. Yushmanov W.A. Zajc C. Zhang S. Zhou L. Zolin
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keywords partcollisionschargedellipticflowhadronshexadecapolemeasurements
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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 the number of participant nucleons (N_part) for Au+Au collisions at sqrt(s_NN)=200 GeV. The v_{2,4} measurements at pseudorapidity |\eta|<=0.35 obtained with four separate reaction plane detectors positioned in the range 1.0<|\eta|<3.9 show good agreement, indicating the absence of significant \eta-dependent nonflow perturbations. 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.

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