Saturation of azimuthal anisotropy in Au plus Au collisions at √SNN=62-200 GeV -: art. no. 232302

被引：127

作者：

Adler, SS ^{[1
]}

Afanasiev, S

Aidala, C

Ajitanand, NN

Akiba, Y

Al-Jamel, A

Alexander, J

Amirikas, R

Aoki, K

Aphecetche, L

Armendariz, R

Aronson, SH

Averbeck, R

Awes, TC

Azmoun, B

Azmoun, R

Babintsev, V

Baldisseri, A

Barish, KN

Barnes, PD

Bassalleck, B

Bathe, S

Batsouli, S

Baublis, V

Bauer, F

Bazilevsky, A

Belikov, S

Bennett, R

Berdnikov, Y

Bhagavatula, S

Bjorndal, MT

Boissevain, JG

Borel, H

Borenstein, S

Boyle, K

Brooks, ML

Brown, DS

Bruner, N

Bucher, D

Buesching, H

Bumazhnov, V

Bunce, G

Burward-Hoy, JM

Butsyk, S

Camard, X

Campbell, S

Chai, JS

Chand, P

Chang, WC

Chernichenko, S

机构：

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

[2] Abilene Christian Univ, Abilene, TX 79699 USA

[3] Acad Sinica, Inst Phys, Taipei 11529, Taiwan

[4] Banaras Hindu Univ, Dept Phys, Varanasi 221005, Uttar Pradesh, India

[5] Bhabha Atom Res Ctr, Bombay 400085, Maharashtra, India

[6] Univ Calif Riverside, Riverside, CA 92521 USA

[7] China Inst Atom Energy, Beijing, Peoples R China

[8] Univ Tokyo, Grad Sch Sci, Ctr Nucl Study, Bunkyo Ku, Tokyo 1130033, Japan

[9] Univ Colorado, Boulder, CO 80309 USA

[10] Columbia Univ, New York, NY 10027 USA

[11] Nevis Labs, Irvington, NY 10533 USA

[12] CEA Saclay, Dapnia, F-91191 Gif Sur Yvette, France

[13] Debrecen Univ, H-4010 Debrecen, Hungary

[14] Eotvos Lorand Univ, ELTE, H-1117 Budapest, Hungary

[15] Florida State Univ, Tallahassee, FL 32306 USA

[16] Georgia State Univ, Atlanta, GA 30303 USA

[17] Hiroshima Univ, Higashihiroshima 7398526, Japan

[18] Inst High Energy Phys, Protvino, Russia

[19] Univ Illinois, Urbana, IL 61801 USA

[20] Iowa State Univ, Ames, IA 50011 USA

[21] Joint Inst Nucl Res, Dubna 141980, Moscow Region, Russia

[22] KAERI, Cyclotron Applicat Lab, Seoul, South Korea

[23] Kangnung Natl Univ, Kangnung 210702, South Korea

[24] High Energy Accelerator Res Org, KEK, Tsukuba, Ibaraki 3050801, Japan

[25] KFKI Res Inst Particle & Nucl Phys, H-1525 Budapest, Hungary

[26] Korea Univ, Seoul 136701, South Korea

[27] Russian Res Ctr, Kurchatov Inst, Moscow, Russia

[28] Kyoto Univ, Kyoto 6068502, Japan

[29] Ecole Polytech, Lab Leprince Ringuet, CNRS, IN2P3, F-91128 Palaiseau, France

[30] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

[31] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[32] Univ Clermont Ferrand, LPC, CNRS, IN2P3, F-63177 Aubiere, France

[33] Lund Univ, Dept Phys, SE-22100 Lund, Sweden

[34] Univ Munster, Inst Kernphys, D-48149 Munster, Germany

[35] Myongji Univ, Yongin 449728, Kyonggido, South Korea

[36] Nagasaki Inst Appl Sci, Nagasaki 8510193, Japan

[37] Univ New Mexico, Albuquerque, NM 87131 USA

[38] New Mexico State Univ, Las Cruces, NM 88003 USA

[39] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

[40] Univ Paris 11, IPN Orsay, CNRS, IN2P3, F-91406 Orsay, France

[41] Peking Univ, Beijing 100871, Peoples R China

[42] Petersburg Nucl Phys Inst, Gatchina, Russia

[43] Inst Phys & Chem Res, Wako, Saitama 3510198, Japan

[44] Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA

[45] Rikkyo Univ, Dept Phys, Tokyo 1718501, Japan

[46] St Petersburg State Tech Univ, St Petersburg, Russia

[47] Univ Sao Paulo, Inst Fis, BR-05315970 Sao Paulo, Brazil

[48] Seoul Natl Univ, Syst Elect Lab, Seoul, South Korea

[49] SUNY Stony Brook, Dept Chem, Stony Brook, NY 11794 USA

[50] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 94卷 / 23期

关键词：

D O I：

10.1103/PhysRevLett.94.232302

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

New measurements are presented for charged hadron azimuthal correlations at midrapidity in Au+Au collisions at root s(NN)=62.4 and 200 GeV. They are compared to earlier measurements obtained at root s(NN)=130 GeV and in Pb+Pb collisions at root s(NN)=17.2 GeV. Sizeable anisotropies are observed with centrality and transverse momentum (p(T)) dependence characteristic of elliptic flow (v(2)). For a broad range of centralities, the observed magnitudes and trends of the differential anisotropy, v(2)(p(T)), change very little over the collision energy range root s(NN)=62-200 GeV, indicating saturation of the excitation function for v(2) at these energies. Such a saturation may be indicative of the dominance of a very soft equation of state for root s(NN)similar to 60-200 GeV.

引用

页数：6

共 32 条

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