Skip to Main content Skip to Navigation
Journal articles

Higher harmonic anisotropic flow measurements of charged particles in Pb-Pb collisions at 2.76 TeV

K. Aamodt Sang Un Ahn 1 N. Arbor 2 Laurent Aphecetche 3 Y.W. Baek 4 A. Baldisseri 5 A. Baldit 4 V. Barret 4 N. Bastid 4 Guillaume Batigne 3 I. Belikov 6 H. Borel 5 B. Boyer 7 M. Bregant 3 J. Castillo Castellanos 5 J.L. Charvet 5 B. Cheynis 8 J.-P. Coffin 6 G. Conesa Balbastre 2 Z. Conesa del Valle 6 P. Crochet 4 H. Delagrange 3 O. Driga 3 L. Ducroux 8 P. Dupieux 4 B. Espagnon 7 Magali Estienne 3 J. Faivre 2 C. Furget 2 S. Gadrat 2 Marie Germain 3 C. Geuna 5 J.-Y. Grossiord 9 R. Guernane 2 M. Guilbaud 8 C. Hadjidakis 7 B. Hippolyte 6 I. Hrivnacova 7 S. Jangal 6 S. Kox 2 C. Kuhn 6 V. Lafage 7 A. Lardeux 3 Y. Le Bornec 7 F. Lefevre 3 M. Lenhardt 3 X. Lopez 4 M. Lopez Noriega 7 A. Maire 6 F. Manso 4 Y. Mao 2 M. Marchisono 4 Gines Martinez Garcia 3 A. Mas 3 L. Massacrier 8 Philippe Pillot 3 A. Rakotozafindrabe 5 J.S. Real 2 P. Rosnet 4 S. Rousseau 7 C. Roy 6 P. Saturnini 4 Diego Stocco 3 C. Suire 7 J.D. Tapia Takaki 7 R. Tieulent 8 L. Valencia Palomo 7 R. Vernet 10 R. Wan 6 Y. Zoccarato 8
Abstract : We report on the first measurement of the triangular v3, quadrangular v4, and pentagonal v5 charged particle flow in Pb-Pb collisions at 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 v2 and v3 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.
Document type :
Journal articles
Complete list of metadatas

http://hal.in2p3.fr/in2p3-00595710
Contributor : Sylvie Flores <>
Submitted on : Wednesday, May 25, 2011 - 1:51:37 PM
Last modification on : Wednesday, September 16, 2020 - 4:08:32 PM

Links full text

Identifiers

Citation

K. Aamodt, Sang Un Ahn, N. Arbor, Laurent Aphecetche, Y.W. Baek, et al.. Higher harmonic anisotropic flow measurements of charged particles in Pb-Pb collisions at 2.76 TeV. Physical Review Letters, American Physical Society, 2011, 107, pp.032301. ⟨10.1103/PhysRevLett.107.032301⟩. ⟨in2p3-00595710⟩

Share

Metrics

Record views

469