Higher Harmonic Anisotropic Flow Measurements of Charged Particles in Pb-Pb Collisions at √sNN=2.76 TeV

被引：640

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
]}

Agostinelli, A. ^{[9
,10
]}

Aguilar Salazar, S. ^{[11
]}

Ahammed, Z. ^{[12
]}

Ahmad, N. ^{[13
]}

Masoodi, A. Ahmad ^{[13
]}

Ahn, S. U. ^{[14
,15
]}

Akindinov, A. ^{[16
]}

Aleksandrov, D. ^{[17
]}

Alessandro, B. ^{[18
]}

Alfaro Molina, R. ^{[11
]}

Alici, A. ^{[7
,9
,10
,19
,20
]}

Alkin, A. ^{[21
]}

Almaraz Avina, E. ^{[11
]}

Alt, T. ^{[22
]}

Altini, V. ^{[7
,23
,24
]}

Altsybeev, I. ^{[25
]}

Andrei, C. ^{[26
]}

Andronic, A. ^{[27
,28
]}

Anguelov, V. ^{[22
,29
]}

Anson, C. ^{[30
]}

Anticic, T. ^{[31
]}

Antinori, F. ^{[32
]}

Antonioli, P. ^{[10
]}

Aphecetche, L. ^{[33
]}

Appelshaeuser, H. ^{[34
]}

Arbor, N. ^{[35
]}

Arcelli, S. ^{[9
,10
]}

Arend, A. ^{[34
]}

Armesto, N. ^{[36
,37
]}

Arnaldi, R. ^{[18
]}

Aronsson, T. ^{[5
]}

Arsene, I. C. ^{[27
,28
]}

Arslandok, M. ^{[34
]}

Asryan, A. ^{[25
]}

Augustinus, A. ^{[7
]}

Averbeck, R. ^{[27
,28
]}

Awes, T. C. ^{[38
]}

Aysto, J. ^{[39
,40
]}

Azmi, M. D. ^{[13
]}

Bach, M. ^{[22
]}

Badala, A. ^{[41
]}

Baek, Y. W. ^{[14
,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, Prague, 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 Bologna, Dipartmento Fis, Bologna, Italy

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

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

[12] Ctr Variable Energy Cyclotron, Kolkata, India

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

[14] Univ Blaise Pascal, Clermont Univ, CNRS, IN2P3,LPC, Clermont Ferrand, France

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

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

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

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

[19] Ctr Ric, Ctr Fermi, Rome, Italy

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

[21] Bogolyubov Inst Theoret Phys, Kiev, Ukraine

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

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

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

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

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

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

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

[29] Heidelberg Univ, Inst Phys, D-6900 Heidelberg, Germany

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

[31] Rudjer Boskovic Inst, Zagreb, Croatia

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

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

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

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

[36] Univ Santiago de Compostela, Dept Fis Particulas, Santiago De Compostela, Spain

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

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

[39] Univ Jyvaskyla, Jyvaskyla, Finland

[40] HIP, Jyvaskyla, Finland

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

[42] IRFU, Commissariat Energie Atom, Saclay, France

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

[44] Inst Phys, Bhubaneswar 751007, Orissa, India

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

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

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

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

[49] Joint Inst Nucl Res, Dubna, Russia

[50] Univ Copenhagen, Niels Bohr Inst, DK-2100 Copenhagen, Denmark

来源：

PHYSICAL REVIEW LETTERS | 2011年 / 107卷 / 03期

基金：

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

关键词：

ELLIPTIC FLOW; ENERGY;

D O I：

10.1103/PhysRevLett.107.032301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on the first measurement of the triangular nu(3), quadrangular nu(4), and pentagonal nu(5) charged particle flow in Pb-Pb collisions at root s(NN) = 2.76 TeV measured with the ALICE detector at the CERN Large Hadron Collider. We show that the triangular flow can be described in terms of the initial spatial anisotropy and its fluctuations, which provides strong constraints on its origin. In the most central events, where the elliptic flow nu(2) and nu(3) have similar magnitude, a double peaked structure in the two-particle azimuthal correlations is observed, which is often interpreted as a Mach cone response to fast partons. We show that this structure can be naturally explained from the measured anisotropic flow Fourier coefficients.

引用

页数：10

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