Elliptic Flow of Charged Particles in Pb-Pb Collisions at root s(NN)=2.76 TeV RID G-2135-2010 RID E-6733-2011 RID H-4004-2011 RID F-9008-2011 RID C-5003-2011 RID D-3614-2011 RID D-6993-2011 RID A-7023-2012 RID A-4063-2008 RID B-2946-2012 RID C-4598-2011

We report the first measurement of charged particle elliptic flow in Pb-Pb collisions at root s(NN) p = 2.76 TeV with the ALICE detector at the CERN Large Hadron Collider. The measurement is performed in the central pseudorapidity region (vertical bar eta vertical bar < 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) +/- 0.003(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 root s(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.