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

来源：

PHYSICS LETTERS B | 2011年 / 704卷 / 05期

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

页码：467 / 473

页数：7

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