Elliptic flow in Au plus Au collisions at √sNN=130 GeV

被引：688

作者：

Ackermann, KH ^{[1
]}

Adams, N

Adler, C

Ahammed, Z

Ahmad, S

Allgower, C

Amsbaugh, J

Anderson, M

Anderssen, E

Arnesen, H

Arnold, L

Averichev, GS

Baldwin, A

Balewski, J

Barannikova, O

Barnby, LS

Baudot, J

Beddo, M

Bekele, S

Belaga, VV

Bellwied, R

Bennett, S

Bercovitz, J

Berger, J

Betts, W

Bichsel, H

Bieser, F

Bland, LC

Bloomer, M

Blyth, CO

Boehm, J

Bonner, BE

Bonnet, D

Bossingham, R

Botlo, M

Boucham, A

Bouillo, N

Bouvier, S

Bradley, K

Brady, FP

Braithwaite, ES

Braithwaite, W

Brandin, A

Brown, RL

Brugalette, G

Byrd, C

Caines, H

Sánchez, MCD

Cardenas, A

Carr, L

机构：

[1] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany

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

[3] Univ Arkansas, Little Rock, AR 72204 USA

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

[5] Univ Birmingham, Birmingham, W Midlands, England

[6] Univ Calif Berkeley, Berkeley, CA 94720 USA

[7] Univ Calif Davis, Davis, CA 95616 USA

[8] Univ Calif Los Angeles, Los Angeles, CA 90095 USA

[9] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA

[10] Creighton Univ, Omaha, NE 68178 USA

[11] Joint Inst Nucl Res Dubna, Lab High Energy, Dubna, Russia

[12] Joint Inst Nucl Res Dubna, Particle Phys Lab, Dubna, Russia

[13] Goethe Univ Frankfurt, D-6000 Frankfurt, Germany

[14] Indiana Univ, Bloomington, IN 47408 USA

[15] Inst Rech Subatom, Strasbourg, France

[16] Johns Hopkins Univ, Baltimore, MD 21218 USA

[17] Kent State Univ, Kent, OH 44242 USA

[18] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

[19] MIT, Cambridge, MA 02139 USA

[20] Michigan State Univ, E Lansing, MI 48824 USA

[21] Moscow Engn Phys Inst, Moscow 115409, Russia

[22] CUNY City Coll, New York, NY 10031 USA

[23] Univ Notre Dame, Notre Dame, IN 46556 USA

[24] Ohio State Univ, Columbus, OH 43210 USA

[25] Penn State Univ, University Pk, PA 16802 USA

[26] Inst High Energy Phys, Protvino, Russia

[27] Purdue Univ, W Lafayette, IN 47907 USA

[28] Rice Univ, Houston, TX 77251 USA

[29] Univ Sao Paulo, Sao Paulo, Brazil

[30] SUBATECH, Nantes, France

[31] Univ Texas, Austin, TX 78712 USA

[32] Warsaw Univ, Warsaw, Poland

[33] Warsaw Univ Technol, Warsaw, Poland

[34] Univ Washington, Seattle, WA 98195 USA

[35] Wayne State Univ, Detroit, MI 48201 USA

[36] Yale Univ, New Haven, CT 06520 USA

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.86.402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Elliptic flow from nuclear collisions is a hadronic observable sensitive to the early stages of system evolution. We report first results on elliptic flow of charged particles at midrapidity in Au + Au collisions at rootS(NN) = 130 GeV using the STAR Time Projection Chamber at the Relativistic Heavy Ion Collider. The elliptic flow signal, v(2), averaged over transverse momentum, reaches values of about 6% for relatively peripheral collisions and decreases for the more central collisions. This can be interpreted as the observation of a higher degree of thermalization than at lower collision energies. Pseudorapidity and transverse momentum dependence of elliptic how are also presented.

引用

页码：402 / 407

页数：6

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