Elliptic Flow of Charged Particles in Pb-Pb Collisions at sqrt(sNN)= 2.76 TeV (CROSBI ID 173105)
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Podaci o odgovornosti
Aamodt, K. ; ... ; Antičić, Tome ; ... ; Gotovac, Sven ; ... ; Mudnić, Eugen ; ... ; Šuša, Tatjana ; ... ; Vicković, Linda ; ... ; Zynovyev, M.
engleski
Elliptic Flow of Charged Particles in Pb-Pb Collisions at sqrt(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 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.
LHC; ALICE; 2.76 TeV; Elliptic Flow
The ALICE Collaboration
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Podaci o izdanju
105 (25)
2010.
252302-1-252302-11
objavljeno
0031-9007
10.1103/PhysRevLett.105.252302