Elliptic Flow of Charged Particles in Pb-Pb Collisions at √sNN=2.76 TeV

被引：676

作者：

Aamodt, K. ^{[1
]}

Abelev, B. ^{[2
]}

Abrahantes Quintana, A. ^{[3
]}

Adamova, D. ^{[4
]}

Adare, A. M. ^{[5
]}

Aggarwal, M. M. ^{[6
]}

Rinella, G. Aglieri ^{[7
]}

Agocs, A. G. ^{[8
]}

Aguilar Salazar, S. ^{[9
]}

Ahammed, Z. ^{[10
]}

Masoodi, A. Ahmad ^{[11
]}

Ahmad, N. ^{[11
]}

Ahn, S. U. ^{[12
,44
]}

Akindinov, A. ^{[13
]}

Aleksandrov, D. ^{[14
]}

Alessandro, B. ^{[15
]}

Alfaro Molina, R. ^{[9
]}

Alici, A. ^{[16
,17
]}

Alkin, A.

Almaraz Avina, E. ^{[9
]}

Alt, T. ^{[19
]}

Altini, V. ^{[20
,21
]}

Altinpinar, S. ^{[22
,23
]}

Altsybeev, I. ^{[24
]}

Andrei, C. ^{[25
]}

Andronic, A. ^{[22
,23
]}

Anguelov, V. ^{[26
]}

Anson, C. ^{[27
]}

Anticic, T. ^{[28
]}

Antinori, F. ^{[29
,30
]}

Antonioli, P. ^{[17
]}

Aphecetche, L. ^{[31
]}

H. Appelshaeuser ^{[32
]}

Arbor, N. ^{[33
]}

Arcelli, S. ^{[16
,17
]}

Arend, A. ^{[32
]}

Armesto, N. ^{[34
,35
]}

Arnaldi, R. ^{[15
]}

Aronsson, T. ^{[5
]}

Arsene, I. C. ^{[22
,23
]}

Asryan, A. ^{[24
]}

Augustinus, A. ^{[7
]}

Averbeck, R. ^{[22
,23
]}

Awes, T. C. ^{[36
]}

Aysto, J. ^{[37
,38
]}

Azmi, M. D. ^{[11
]}

Bach, M. ^{[19
]}

Badala, A. ^{[39
]}

Baek, Y. W. ^{[12
]}

Bagnasco, S. ^{[15
]}

机构：

[1] Univ Bergen, Dept Phys & Technol, Bergen, Norway

[2] Lawrence Livermore Natl Lab, Livermore, CA USA

[3] Ctr Aplicac Tecnol & Desarrollo Nucl CEADEN, Havana, Cuba

[4] Acad Sci Czech Republ, Inst Nucl Phys, CZ-25068 Rez, Czech Republic

[5] Yale Univ, New Haven, CT USA

[6] Panjab Univ, Dept Phys, Chandigarh 160014, India

[7] European Org Nucl Res CERN, Geneva, Switzerland

[8] Hungarian Acad Sci, KFKI Res Inst Particle & Nucl Phys, Budapest, Hungary

[9] Univ Nacl Autonoma Mexico, Inst Fis, Mexico City 01000, DF, Mexico

[10] Ctr Variable Energy Cyclotron, Kolkata, India

[11] Aligarh Muslim Univ, Dept Phys, Aligarh 202002, Uttar Pradesh, India

[12] Gangneung Wonju Natl Univ, Kangnung, South Korea

[13] Inst Theoret & Expt Phys, Moscow 117259, Russia

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

[15] Sezione Ist Nazl Fis Nucl, Turin, Italy

[16] Univ Bologna, Dipartimento Fis, Bologna, Italy

[17] Sezione Ist Nazl Fis Nucl, Bologna, Italy

[18] Bogolyubov Inst Theoret Phys, Kiev, Ukraine

[19] Goethe Univ Frankfurt, Frankfurt Inst Adv Studies, Frankfurt, Germany

[20] Dipartimento Interateneo Fis M Merlin, Bari, Italy

[21] Sezione Ist Nazl Fis Nucl, Bari, Italy

[22] GSI Helmholtzzentrum Schwerionenforsch, Div Res, Darmstadt, Germany

[23] GSI Helmholtzzentrum Schwerionenforsch, ExtreMe Matter Inst EMMI, Darmstadt, Germany

[24] St Petersburg State Univ, V Fock Inst Phys, St Petersburg, Russia

[25] Natl Inst Phys & Nucl Engn, Bucharest, Romania

[26] Heidelberg Univ, Kirchhoff Inst Phys, Heidelberg, Germany

[27] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA

[28] Rudjer Boskovic Inst, Zagreb, Croatia

[29] Univ Padua, Dipartimento Fis, Padua, Italy

[30] Sezione Ist Nazl Fis Nucl, Padua, Italy

[31] Univ Nantes, SUBATECH, Ecole Mines Nantes, CNRS IN2P3, Nantes, France

[32] Goethe Univ Frankfurt, Inst Kernphys, D-6000 Frankfurt, Germany

[33] Univ Grenoble 1, LPSC, CNRS IN2P3, Inst Polytech Grenoble, Grenoble, France

[34] Univ Santiago de Compostela, Dept Fis Particules, Santiago De Compostela, Spain

[35] Univ Santiago de Compostela, IGFAE, Santiago De Compostela, Spain

[36] Oak Ridge Natl Lab, Oak Ridge, TN USA

[37] Helsinki Inst Phys, Jyvaskyla, Finland

[38] Univ Jyvaskyla, Jyvaskyla, Finland

[39] Sezione Ist Nazl Fis Nucl, Catania, Italy

[40] Univ Turin, Dipartimento Fis Sperimentale, Turin, Italy

[41] Ctr Studi & Ric, Ctr Fermi, Rome, Italy

[42] Museo Stor Fis Enrico Fermi, Rome, Italy

[43] IRFU, CEA, Saclay, France

[44] Univ Blaise Pascal, Phys Corpusculaire Lab, Clermont Univ, CNRS IN2P3, Clermont Ferrand, France

[45] Slovak Acad Sci, Inst Expt Phys, Kosice 04353, Slovakia

[46] Univ Catania, Dipartimento Fis & Astron, Catania, Italy

[47] Univ Birmingham, Sch Phys & Astron, Birmingham, W Midlands, England

[48] Polish Acad Sci, Henryk Niewodniczanski Inst Nucl Phys, Krakow, Poland

[49] Univ Munster, Inst Kernphys, D-4400 Munster, Germany

[50] Joint Inst Nucl Res, Dubna, Russia

来源：

PHYSICAL REVIEW LETTERS | 2010年 / 105卷 / 25期

基金：

巴西圣保罗研究基金会; 美国国家科学基金会; 新加坡国家研究基金会; 欧洲研究理事会; 芬兰科学院; 英国科学技术设施理事会; 中国国家自然科学基金; 瑞典研究理事会;

关键词：

QUARK-GLUON PLASMA; PLUS AU COLLISIONS; ANISOTROPIC FLOW; PERSPECTIVE; MATTER; LIMIT;

D O I：

10.1103/PhysRevLett.105.252302

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the first measurement of charged particle elliptic flow in Pb-Pb collisions at root s(NN) p = 2.76 TeV with the ALICE detector at the CERN Large Hadron Collider. The measurement is performed in the central pseudorapidity region (vertical bar eta vertical bar < 0.8) and transverse momentum range 0.2 < p(t) < 5.0 GeV/c. The elliptic flow signal v(2), measured using the 4-particle correlation method, averaged over transverse momentum and pseudorapidity is 0.087 +/- 0.002(stat) +/- 0.003(syst) in the 40%-50% centrality class. The differential elliptic flow v(2)(p(t)) reaches a maximum of 0.2 near p(t) = 3 GeV/c. Compared to RHIC Au-Au collisions at root s(NN) = 200 GeV, the elliptic flow increases by about 30%. Some hydrodynamic model predictions which include viscous corrections are in agreement with the observed increase.

引用

页数：11

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