System size, energy, pseudorapidity, and centrality dependence of elliptic flow

被引：310

作者：

Alver, B. ^{[1
]}

Back, B. B.

Baker, M. D.

Ballintijn, M.

Barton, D. S.

Betts, R. R.

Bickley, A. A.

Bindel, R.

Busza, W.

Carroll, A.

Chai, Z.

Chetluru, V.

Decowski, M. P.

Garcia, E.

Gburek, T.

George, N.

Gulbrandsen, K.

Halliwell, C.

Hamblen, J.

Harnarine, I.

Hauer, M.

Henderson, C.

Hofman, D. J.

Hollis, R. S.

Holynski, R.

Holzman, B.

Iordanova, A.

Johnson, E.

Kane, J. L.

Khan, N.

Kulinich, P.

Kuo, C. M.

Li, W.

Lin, W. T.

Loizides, C.

Manly, S.

Mignerey, A. C.

Nouicer, R.

Olszewski, A.

Pak, R.

Reed, C.

Richardson, E.

Roland, C.

Roland, G.

Sagerer, J.

Seals, H.

Sedykh, I.

Smith, C. E.

Stankiewicz, M. A.

Steinberg, P.

机构：

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

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

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

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

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

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

[7] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA

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

[9] Inst Nucl Phys PAN, Krakow, Poland

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 98卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.98.242302

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

This Letter presents measurements of the elliptic flow of charged particles as a function of pseudorapidity and centrality from Cu-Cu collisions at 62.4 and 200 GeV using the PHOBOS detector at the Relativistic Heavy Ion Collider. The elliptic flow in Cu-Cu collisions is found to be significant even for the most central events. For comparison with the Au-Au results, it is found that the detailed way in which the collision geometry (eccentricity) is estimated is of critical importance when scaling out system-size effects. A new form of eccentricity, called the participant eccentricity, is introduced which yields a scaled elliptic flow in the Cu-Cu system that has the same relative magnitude and qualitative features as that in the Au-Au system.

引用

页数：5

共 29 条

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