Evolution of the differential transverse momentum correlation function with centrality in Au plus Au collisions at √sNN=200 GeV

被引:33
|
作者
Agakishiev, G. [1 ]
Aggarwal, M. M. [2 ]
Ahammed, Z. [3 ]
Alakhverdyants, A. V. [1 ]
Alekseev, I. [4 ]
Alford, J. [5 ]
Anderson, B. D. [5 ]
Anson, C. D. [6 ]
Arkhipkin, D. [7 ]
Averichev, G. S. [1 ]
Balewski, J. [8 ]
Beavis, D. R. [7 ]
Behera, N. K. [9 ]
Bellwied, R. [10 ]
Betancourt, M. J. [8 ]
Betts, R. R. [11 ]
Bhasin, A. [12 ]
Bhati, A. K. [2 ]
Bichsel, H. [13 ]
Bielcik, J. [14 ]
Bielcikova, J. [15 ]
Biritz, B. [16 ]
Bland, L. C. [7 ]
Bordyuzhin, I. G. [4 ]
Borowski, W. [17 ]
Bouchet, J. [5 ]
Braidot, E. [18 ,19 ]
Brandin, A. V. [20 ]
Bridgeman, A. [21 ]
Brovko, S. G. [22 ]
Bruna, E. [23 ]
Bueltmann, S. [24 ]
Bunzarov, I. [1 ]
Burton, T. P. [7 ]
Cai, X. Z. [25 ]
Caines, H. [23 ]
Sanchez, M. Calderon de la Barca [22 ]
Cebra, D. [22 ]
Cendejas, R. [16 ]
Cervantes, M. C. [26 ]
Chajecki, Z. [6 ]
Chaloupka, P. [15 ]
Chattopadhyay, S. [27 ]
Chen, H. F. [28 ]
Chen, J. H. [25 ]
Chen, J. Y. [29 ]
Chen, L. [29 ]
Cheng, J. [30 ]
Cherney, M. [31 ]
Chikanian, A. [23 ]
机构
[1] Joint Inst Nucl Res, Dubna 141980, Russia
[2] Panjab Univ, Chandigarh 160014, India
[3] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA
[4] Alikhanov Inst Theoret & Expt Phys, Moscow, Russia
[5] Kent State Univ, Kent, OH 44242 USA
[6] Ohio State Univ, Columbus, OH 43210 USA
[7] Brookhaven Natl Lab, Upton, NY 11973 USA
[8] MIT, Cambridge, MA 02139 USA
[9] Indian Inst Technol, Mumbai 400076, Maharashtra, India
[10] Univ Houston, Houston, TX 77204 USA
[11] Univ Illinois, Chicago, IL 60607 USA
[12] Univ Jammu, Jammu 180001, India
[13] Univ Washington, Seattle, WA 98195 USA
[14] Czech Tech Univ, FNSPE, Prague 11519, Czech Republic
[15] Nucl Phys Inst AS CR, Rez 25068, Czech Republic
[16] Univ Calif Los Angeles, Los Angeles, CA 90095 USA
[17] SUBATECH, Nantes, France
[18] Univ Utrecht, Amsterdam, Netherlands
[19] NIKHEF, Amsterdam, Netherlands
[20] Moscow Engn Phys Inst, Moscow 115409, Russia
[21] Argonne Natl Lab, Argonne, IL 60439 USA
[22] Univ Calif Davis, Davis, CA 95616 USA
[23] Yale Univ, New Haven, CT 06520 USA
[24] Old Dominion Univ, Norfolk, VA 23529 USA
[25] Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China
[26] Texas A&M Univ, College Stn, TX 77843 USA
[27] Bhabha Atom Res Ctr, Ctr Variable Energy Cyclotron, Kolkata 700064, W Bengal, India
[28] Univ Sci & Technol China, Hefei 230026, Peoples R China
[29] CCNU HZNU, Inst Particle Phys, Wuhan 430079, Peoples R China
[30] Tsinghua Univ, Beijing 100084, Peoples R China
[31] Creighton Univ, Omaha, NE 68178 USA
[32] Pusan Natl Univ, Pusan 609735, South Korea
[33] Univ Calif Berkeley, Berkeley, CA 94720 USA
[34] Univ Texas Austin, Austin, TX 78712 USA
[35] Inst High Energy Phys, Protvino, Russia
[36] Univ Estadual Campinas, Sao Paulo, Brazil
[37] Wayne State Univ, Detroit, MI 48201 USA
[38] Rice Univ, Houston, TX 77251 USA
[39] Penn State Univ, University Pk, PA 16802 USA
[40] Univ Kentucky, Lexington, KY 40506 USA
[41] Valparaiso Univ, Valparaiso, IN 46383 USA
[42] Purdue Univ, W Lafayette, IN 47907 USA
[43] Indiana Univ, Bloomington, IN 47408 USA
[44] Inst Phys, Bhubaneswar 751005, Orissa, India
[45] Warsaw Univ Technol, Warsaw, Poland
[46] Goethe Univ Frankfurt, Frankfurt, Germany
[47] Shandong Univ, Jinan 250100, Shandong, Peoples R China
[48] Univ Sao Paulo, Sao Paulo, Brazil
[49] Univ Zagreb, HR-1002 Zagreb, Croatia
[50] Inst Modern Phys, Lanzhou, Peoples R China
基金
巴西圣保罗研究基金会; 英国工程与自然科学研究理事会;
关键词
Azimuthal correlations; QGP; Heavy ion collisions; ELLIPTIC FLOW; VISCOSITY;
D O I
10.1016/j.physletb.2011.09.075
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We present first measurements of the evolution of the differential transverse momentum correlation function, C, with collision centrality in Au + Au interactions at root s(NN) = 200 GeV. This observable exhibits a strong dependence on collision centrality that is qualitatively similar to that of number correlations previously reported. We use the observed longitudinal broadening of the near-side peak of C with increasing centrality to estimate the ratio of the shear viscosity to entropy density, eta/s, of the matter formed in central Au + Au interactions. We obtain an upper limit estimate of eta/s that suggests that the produced medium has a small viscosity per unit entropy. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码:467 / 473
页数:7
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