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
基金
美国国家科学基金会; 芬兰科学院; 新加坡国家研究基金会; 瑞典研究理事会; 巴西圣保罗研究基金会; 英国科学技术设施理事会; 中国国家自然科学基金; 欧洲研究理事会;
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
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页数:11
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