Event-by-Event Fluctuations of Azimuthal Particle Anisotropy in Au plus Au Collisions at √sNN=200 GeV

被引：45

作者：

Alver, B. ^{[1
]}

Back, B. B. ^{[2
]}

Baker, M. D. ^{[3
,4
]}

Ballintijn, M. ^{[1
]}

Barton, D. S. ^{[3
,4
]}

Betts, R. R. ^{[7
]}

Bickley, A. A. ^{[8
]}

Bindel, R. ^{[8
]}

Busza, W. ^{[1
]}

Carroll, A. ^{[3
,4
]}

Chai, Z. ^{[3
,4
]}

Decowski, M. P. ^{[1
]}

Garcia, E. ^{[7
]}

Gburek, T. ^{[5
]}

George, N. ^{[3
,4
]}

Gulbrandsen, K. ^{[1
]}

Halliwell, C. ^{[7
]}

Hamblen, J. ^{[9
]}

Hauer, M. ^{[3
,4
]}

Henderson, C. ^{[1
]}

Hofman, D. J. ^{[7
]}

Hollis, R. S. ^{[7
]}

Holynski, R. ^{[5
]}

Holzman, B. ^{[3
,4
]}

Iordanova, A. ^{[7
]}

Johnson, E. ^{[9
]}

Kane, J. L. ^{[1
]}

Khan, N. ^{[9
]}

Kulinich, P. ^{[1
]}

Kuo, C. M. ^{[6
]}

Li, W. ^{[1
]}

Lin, W. T. ^{[6
]}

Loizides, C. ^{[1
]}

Manly, S. ^{[9
]}

Mignerey, A. C. ^{[8
]}

Nouicer, R. ^{[3
,4
,7
]}

Olszewski, A. ^{[5
]}

Pak, R. ^{[3
,4
]}

Reed, C. ^{[1
]}

Roland, C. ^{[1
]}

Roland, G. ^{[1
]}

Sagerer, J. ^{[7
]}

Seals, H. ^{[3
,4
]}

Sedykh, I. ^{[3
,4
]}

Smith, C. E. ^{[7
]}

Stankiewicz, M. A. ^{[3
,4
]}

Steinberg, P. ^{[3
,4
]}

Stephans, G. S. F. ^{[1
]}

Sukhanov, A. ^{[3
,4
]}

Tonjes, M. B. ^{[8
]}

机构：

[1] MIT, Nucl Sci Lab, Cambridge, MA 02139 USA

[2] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA

[3] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA

[4] Brookhaven Natl Lab, CA Dept, Upton, NY 11973 USA

[5] Inst Nucl Phys PAN, Krakow, Poland

[6] Natl Cent Univ, Dept Phys, Chungli 32054, Taiwan

[7] Univ Illinois, Dept Phys, Chicago, IL 60607 USA

[8] Univ Maryland, Dept Chem, College Pk, MD 20742 USA

[9] Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 104卷 / 14期

基金：

美国国家科学基金会;

关键词：

QUARK-GLUON PLASMA; NUCLEAR COLLISIONS; FLOW; COLLABORATION; PERSPECTIVE;

D O I：

10.1103/PhysRevLett.104.142301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

This Letter presents the first measurement of event-by-event fluctuations of the elliptic flow parameter nu(2) in Au + Au collisions root s(NN) = 200 GeV as a function of collision centrality. The relative non-statistical fluctuations of the nu(2) parameter are found to be approximately 40%. The results, including contributions from event-by-event elliptic flow fluctuations and from azimuthal correlations that are unrelated to the reaction plane (nonflow correlations), establish an upper limit on the magnitude of underlying elliptic flow fluctuations. This limit is consistent with predictions based on spatial fluctuations of the participating nucleons in the initial nuclear overlap region. These results provide important constraints on models of the initial state and hydrodynamic evolution of relativistic heavy ion collisions.

引用

页数：5

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