Systematic study of azimuthal anisotropy in Cu plus Cu and Au plus Au collisions at √sNN=62.4 and 200 GeV

被引:25
作者
Adare, A. [11 ]
Afanasiev, S. [28 ]
Aidala, C. [12 ,13 ,40 ]
Ajitanand, N. N. [58 ]
Akiba, Y. [52 ,53 ]
Al-Bataineh, H. [46 ]
Al-Jamel, A. [46 ]
Alexander, J. [58 ]
Aoki, K. [33 ,52 ]
Aphecetche, L. [60 ]
Armendariz, R. [46 ]
Aronson, S. H. [6 ]
Asai, J. [53 ]
Atomssa, E. T. [34 ]
Averbeck, R. [59 ]
Awes, T. C. [48 ]
Azmoun, B. [6 ]
Babintsev, V. [22 ]
Baksay, G. [18 ]
Baksay, L. [18 ]
Baldisseri, A. [15 ]
Barish, K. N. [7 ]
Barnes, P. D. [37 ]
Bassalleck, B. [45 ]
Bathe, S. [4 ,7 ]
Batsouli, S. [12 ,13 ,48 ]
Baublis, V. [51 ]
Bauer, F. [7 ]
Bazilevsky, A. [6 ]
Belikov, S. [6 ,26 ]
Bennett, R. [59 ]
Berdnikov, Y. [55 ]
Bickley, A. A. [11 ]
Bjorndal, M. T. [12 ,13 ]
Boissevain, J. G. [37 ]
Borel, H. [15 ]
Boyle, K. [59 ]
Brooks, M. L. [37 ]
Brown, D. S. [46 ]
Bucher, D. [41 ]
Buesching, H. [6 ]
Bumazhnov, V. [22 ]
Bunce, G. [6 ,53 ]
Burward-Hoy, J. M. [37 ]
Butsyk, S. [37 ,59 ]
Campbell, S. [59 ]
Chai, J-S. [29 ]
Chang, B. S. [68 ]
Charvet, J-L. [15 ]
Chernichenko, S. [22 ]
机构
[1] Abilene Christian Univ, Abilene, TX 79699 USA
[2] Augustana Univ, Dept Phys, Sioux Falls, SD 57197 USA
[3] Banaras Hindu Univ, Dept Phys, Varanasi 221005, Uttar Pradesh, India
[4] CUNY Bernard M Baruch Coll, New York, NY 10010 USA
[5] Brookhaven Natl Lab, Collider Accelerator Dept, Upton, NY 11973 USA
[6] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA
[7] Univ Calif Riverside, Riverside, CA 92521 USA
[8] Charles Univ Prague, CR-11636 Prague 1, Czech Republic
[9] China Inst Atom Energy, Sci & Technol Nucl Data Lab, Beijing 102413, Peoples R China
[10] Univ Tokyo, Grad Sch Sci, Ctr Nucl Study, Bunkyo Ku, Tokyo 1130033, Japan
[11] Univ Colorado, Boulder, CO 80309 USA
[12] Columbia Univ, New York, NY 10027 USA
[13] Nevis Labs, Irvington, NY 10533 USA
[14] Czech Tech Univ, Prague 16636 6, Czech Republic
[15] CEA Saclay, Dapnia, F-91191 Gif Sur Yvette, France
[16] Debrecen Univ, H-4010 Debrecen, Hungary
[17] Eotvos Lorand Univ, ELTE, H-1117 Budapest, Hungary
[18] Florida Inst Technol, Melbourne, FL 32901 USA
[19] Florida State Univ, Tallahassee, FL 32306 USA
[20] Georgia State Univ, Atlanta, GA 30303 USA
[21] Hiroshima Univ, Higashihiroshima 7398526, Japan
[22] Inst High Energy Phys, State Res Ctr Russian Federat, IHEP Protvino, Protvino 142281, Russia
[23] Univ Illinois, Urbana, IL 61801 USA
[24] Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia
[25] Acad Sci Czech Republ, Inst Phys, Prague 18221 8, Czech Republic
[26] Iowa State Univ, Ames, IA 50011 USA
[27] Japan Atom Energy Agcy, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan
[28] Joint Inst Nucl Res, Dubna 141980, Moscow Region, Russia
[29] KAERI, Cyclotron Applicat Lab, Seoul, South Korea
[30] High Energy Accelerator Res Org, KEK, Tsukuba, Ibaraki 3050801, Japan
[31] Korea Univ, Seoul 136701, South Korea
[32] Russian Res Ctr Kurchatov Inst, Moscow 123098, Russia
[33] Kyoto Univ, Kyoto 6068502, Japan
[34] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France
[35] Lahore Univ Management Sci, Dept Phys, Lahore 54792, Pakistan
[36] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA
[37] Los Alamos Natl Lab, Los Alamos, NM 87545 USA
[38] Univ Blaise Pascal, CNRS, IN2P3, LPC, F-63177 Clermont Ferrand, France
[39] Lund Univ, Dept Phys, SE-22100 Lund, Sweden
[40] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA
[41] Univ Munster, Inst Kernphys, D-48149 Munster, Germany
[42] Myongji Univ, Yongin 449728, Yongin, South Korea
[43] Nagasaki Inst Appl Sci, Nagasaki, Nagasaki 8510193, Japan
[44] Natl Res Nucl Univ, MEPhI, Moscow Engn Phys Inst, Moscow 115409, Russia
[45] Univ New Mexico, Albuquerque, NM 87131 USA
[46] New Mexico State Univ, Las Cruces, NM 88003 USA
[47] Ohio Univ, Dept Phys & Astron, Athens, OH 45701 USA
[48] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA
[49] Univ Paris 11, Inst Phys Nucl, CNRS, IN2P3, F-91406 Orsay, France
[50] Peking Univ, Beijing 100871, Peoples R China
基金
美国国家科学基金会; 日本学术振兴会; 以色列科学基金会; 新加坡国家研究基金会;
关键词
QUARK-GLUON PLASMA; PHENIX; FLOW; PERSPECTIVE;
D O I
10.1103/PhysRevC.92.034913
中图分类号
O57 [原子核物理学、高能物理学];
学科分类号
070202 ;
摘要
We have studied the dependence of azimuthal anisotropy nu(2) for inclusive and identified charged hadrons in Au + Au and Cu + Cu collisions on collision energy, species, and centrality. The values of nu(2) as a function of transverse momentum pT and centrality in Au + Au collisions at root s(NN) = 200 and 62.4 GeV are the same within uncertainties. However, in Cu + Cu collisions we observe a decrease in nu(2) values as the collision energy is reduced from 200 to 62.4 GeV. The decrease is larger in the more peripheral collisions. By examining both Au + Au and Cu + Cu collisions we find that nu(2) depends both on eccentricity and the number of participants, N-part. We observe that nu(2) divided by eccentricity (epsilon) monotonically increases with N-part and scales as N-part(1/3). The Cu + Cu data at 62.4 GeV falls below the other scaled nu(2) data. For identified hadrons, nu(2) divided by the number of constituent quarks n(q) is independent of hadron species as a function of transverse kinetic energy K E-T = m(T) - m between 0.1 < K E-T / n(q) < 1 GeV. Combining all of the above scaling and normalizations, we observe a near-universal scaling, with the exception of the Cu + Cu data at 62.4 GeV, of nu(2)/(nq center dot e center dot N-part(1/3)) vs K E-T / n(q) for all measured particles.
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页数:20
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