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

We report the first measurement of charged particle elliptic flow in Pb-Pb collisions at √sNN=2.76 TeV with the ALICE detector at the CERN Large Hadron Collider. The measurement is performed in the central pseudorapidity region (|η|<0.8) and transverse momentum range 0.2<pt<5.0 GeV/c. The e...

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Hauptverfasser: Aamodt, Kenneth (VerfasserIn) , Angelov, Venelin (VerfasserIn) , Busch, Oliver (VerfasserIn) , Glässel, Peter (VerfasserIn) , Grajcarek, Robert (VerfasserIn) , Herrmann, Norbert (VerfasserIn) , Klein, Jochen (VerfasserIn) , Mercado Pérez, Jorge (VerfasserIn) , Oyama, Ken (VerfasserIn) , Pachmayer, Yvonne C. (VerfasserIn) , Schicker, Rainer (VerfasserIn) , Schweda, Kai (VerfasserIn) , Stachel, Johanna (VerfasserIn) , Vallero, Sara (VerfasserIn) , Windelband, Bernd (VerfasserIn)
Körperschaft: ALICE (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 13 December 2010
In: Physical review letters
Year: 2010, Jahrgang: 105, Heft: 25, Pages: 1-11
ISSN:1079-7114
DOI:10.1103/PhysRevLett.105.252302
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevLett.105.252302
Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.105.252302
Volltext
Verfasserangaben:K. Aamodt et al. (ALICE Collaboration)*

MARC

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520 |a We report the first measurement of charged particle elliptic flow in Pb-Pb collisions at √sNN=2.76 TeV with the ALICE detector at the CERN Large Hadron Collider. The measurement is performed in the central pseudorapidity region (|η|<0.8) and transverse momentum range 0.2<pt<5.0 GeV/c. The elliptic flow signal v2, 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 v2(pt) reaches a maximum of 0.2 near pt=3 GeV/c. Compared to RHIC Au-Au collisions at √sNN=200 GeV, the elliptic flow increases by about 30%. Some hydrodynamic model predictions which include viscous corrections are in agreement with the observed increase. 
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