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

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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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Main Authors: Aamodt, Kenneth (Author) , Angelov, Venelin (Author) , Busch, Oliver (Author) , Glässel, Peter (Author) , Grajcarek, Robert (Author) , Herrmann, Norbert (Author) , Klein, Jochen (Author) , Mercado Pérez, Jorge (Author) , Oyama, Ken (Author) , Pachmayer, Yvonne C. (Author) , Schicker, Rainer (Author) , Schweda, Kai (Author) , Stachel, Johanna (Author) , Vallero, Sara (Author) , Windelband, Bernd (Author)
Corporate Author: ALICE (Author)
Format: Article (Journal)
Language:English
Published: 13 December 2010
In: Physical review letters
Year: 2010, Volume: 105, Issue: 25, Pages: 1-11
ISSN:1079-7114
DOI:10.1103/PhysRevLett.105.252302
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevLett.105.252302
Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.105.252302
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Author Notes:K. Aamodt et al. (ALICE Collaboration)*
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Summary: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.
Item Description:*(ALICE Collaboration): K. Aamodt, V. Anguelov, O. Busch, P. Glässel, R. Grajcarek, N. Herrmann, J. Klein, J. Mercado Pérez, K. Oyama, Y. Pachmayer, R. Schicker, K. Schweda, J. Stachel, S. Vallero, B. Windelband [und 952 weitere Personen]
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Im Titel steht der Ausdruck "sNN" unter dem Wurzelsymbol
Im Titel ist der Buchstabe s hochgestellt
Physical Description:Online Resource
ISSN:1079-7114
DOI:10.1103/PhysRevLett.105.252302

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