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

被引:680
|
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
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.
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页码:402 / 407
页数:6
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