Elliptic Flow of Charged Particles in Pb-Pb Collisions at {radical}(s{sub NN})=2.76 TeV

Journal Article · Fri Dec 17 00:00:00 EST 2010 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.105.252302· OSTI ID:21554480

Aamodt, K; Djuvsland, O; Fehlker, D; Haaland, O; Huang, M; Kanaki, K; Klovning, A; Larsen, D T; Lien, J; Liu, L; Loenne, P I; Nystrand, J; Richter, M; Roehrich, D; Skjerdal, K; Stokkevag, C H; Szostak, A; Ullaland, K; Ovrebekk, G; Wagner, B ^[1]

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1. Department of Physics and Technology, University of Bergen, Bergen (Norway)

We report the first measurement of charged particle elliptic flow in Pb-Pb collisions at {radical}(s{sub NN})=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{sub t}<5.0 GeV/c. The elliptic flow signal v{sub 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{sub 2}(p{sub t}) reaches a maximum of 0.2 near p{sub t}=3 GeV/c. Compared to RHIC Au-Au collisions at {radical}(s{sub 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.

• OSTI ID: 21554480
• Journal Information: Physical Review Letters, Vol. 105, Issue 25; Other Information: DOI: 10.1103/PhysRevLett.105.252302; (c) 2010 American Institute of Physics; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALICE
BROOKHAVEN RHIC
CERN
CERN LHC
CHARGED PARTICLES
COLLISIONS
CORRECTIONS
CORRELATIONS
GEV RANGE 01-10
GOLD
HYDRODYNAMIC MODEL
PARTICLE RAPIDITY
TEV RANGE 01-10
TRANSVERSE MOMENTUM
ACCELERATORS
CYCLIC ACCELERATORS
ELEMENTS
ENERGY RANGE
GEV RANGE
HEAVY ION ACCELERATORS
INTERNATIONAL ORGANIZATIONS
LINEAR MOMENTUM
MAGNETIC MIRRORS
MATHEMATICAL MODELS
METALS
OPEN PLASMA DEVICES
PARTICLE MODELS
PARTICLE PROPERTIES
STATISTICAL MODELS
STORAGE RINGS
SYNCHROTRONS
TEV RANGE
THERMODYNAMIC MODEL
THERMONUCLEAR DEVICES
TRANSITION ELEMENTS