Elliptic flow of charged particles in Pb-Pb collisions at 2.76 TeV

K. Aamodt; Laurent Aphecetche; Guillaume Batigne; Z. Conesa del Valle; H. Delagrange; M.L Dialinas; O. Driga; M.I Estienne; Marie Germain; R. Ichou; A. Lardeux; N. Le Bris; F. Lefevre; M. Lenhardt; L. Luquin; Gines Martinez Garcia; A. Matyja; Philippe Pillot; Daniel Roy; Y. Schutz; Diego Stocco; M. Anfreville; A. Baldisseri; H. Borel; J. Castillo Castellanos; J.-L. Charvet; C. Geuna; S. Pal; A. Rakotozafindrabe; H. Yang; C. Cheshkov; B. Cheynis; L. Ducroux; J.-Y. Grossiord; L. Massacrier; F. Nendaz; R. Tieulent; Y. Zoccarato; R. Vernet; N. Arbor; J. Faivre; C. Furget; S. Gadrat; R. Guernane; S. Kox; Y. Mao; J. Real; L. Bimbot; B. Boyer; A. Charpy; B. Espagnon; V. Latage; Y. Le Bornec; M. Lopez Noriega; M. Malek; J. Pouthas; J. D. Tapia Takaki; N. Willis; Sang Un Ahn; Y.W. Baek; A. Baldit; V. Barret; N. Bastid; A. Blanc; P. Crochet; P. Dupieux; X. Lopez; Loïc Manceau; F. Manso; P. Rosnet; P. Saturnini; X. Zhang

doi:10.1103/PhysRevLett.105.252302

Journal articles

Elliptic flow of charged particles in Pb-Pb collisions at 2.76 TeV

K. Aamodt Laurent Aphecetche ¹ Guillaume Batigne ¹ Z. Conesa del Valle ¹ H. Delagrange ¹ M.L Dialinas ¹ O. Driga ¹ M.I Estienne ¹ Marie Germain ¹ R. Ichou ¹ A. Lardeux ¹ N. Le Bris ¹ F. Lefevre ¹ M. Lenhardt ¹ L. Luquin ¹ Gines Martinez Garcia ¹ A. Matyja ¹ Philippe Pillot ¹ Daniel Roy ¹ Y. Schutz ¹ Diego Stocco ¹ M. Anfreville ² A. Baldisseri ² H. Borel ² J. Castillo Castellanos ² J.-L. Charvet ² C. Geuna ² S. Pal ² A. Rakotozafindrabe ² H. Yang ² C. Cheshkov ³ B. Cheynis ⁴ L. Ducroux ⁴ J.-Y. Grossiord ³ L. Massacrier ⁴ F. Nendaz ⁴ R. Tieulent ⁴ Y. Zoccarato ⁴ R. Vernet ⁵ N. Arbor ⁶ J. Faivre ⁶ C. Furget ⁶ S. Gadrat ⁶ R. Guernane ⁶ S. Kox ⁶ Y. Mao ⁶ J. Real ⁶ L. Bimbot ⁷ B. Boyer ⁷ A. Charpy ⁷ B. Espagnon ⁷ V. Latage ⁷ Y. Le Bornec ⁷ M. Lopez Noriega ⁷ M. Malek ⁷ J. Pouthas ⁷ J. D. Tapia Takaki ⁷ N. Willis ⁷ Sang Un Ahn ⁸ Y.W. Baek ⁹ A. Baldit ⁹ V. Barret ⁹ N. Bastid ⁹ A. Blanc ⁹ P. Crochet ⁹ P. Dupieux ⁹ X. Lopez ⁹ Loïc Manceau ⁹ F. Manso ⁹ P. Rosnet ⁹ P. Saturnini ⁹ X. Zhang ⁹

1 SUBATECH - Laboratoire SUBATECH Nantes

2 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers

3 ALICE

IP2I Lyon - Institut de Physique des 2 Infinis de Lyon

4 IPNL - Institut de Physique Nucléaire de Lyon

5 CC-IN2P3 - Centre de Calcul de l'IN2P3

6 LPSC - Laboratoire de Physique Subatomique et de Cosmologie

7 IPNO - Institut de Physique Nucléaire d'Orsay

8 Laboratoire de Physique Corpusculaire

LPC - Laboratoire de Physique Corpusculaire - Clermont-Ferrand

9 LPC - Laboratoire de Physique Corpusculaire - Clermont-Ferrand

Abstract : We report the first measurement of charged particle elliptic flow in Pb-Pb collisions at 2.76 TeV with the ALICE detector at the CERN Large Hadron Collider. The measurement is performed in the central pseudorapidity region (|eta|<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) +/- 0.004 (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 200 GeV, the elliptic flow increases by about 30%. Some hydrodynamic model predictions which include viscous corrections are in agreement with the observed increase.

Document type :

Journal articles

Domain :

Physics [physics] / Nuclear Experiment [nucl-ex]

Complete list of metadatas

http://hal.in2p3.fr/in2p3-00537767
Contributor : Dominique Girod <>
Submitted on : Friday, November 19, 2010 - 11:34:19 AM
Last modification on : Thursday, February 25, 2021 - 10:58:36 AM

Elliptic flow of charged particles in Pb-Pb collisions at 2.76 TeV

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Elliptic flow of charged particles in Pb-Pb collisions at 2.76 TeV

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