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A comprehensive viscous hydrodynamic fit of spectra and elliptic flow forcharged hadrons and identified pions and protons from Au+Au collisions of allcentralities measured at the Relativistic Heavy Ion Collider is performed andused as the basis for predicting the analogous observables for Pb+Pb collisionsat the Large Hadron Collider at sqrt(s)=2.76 and 5.5 A TeV. Comparison withrecent measurements of the elliptic flow of charged hadrons by the ALICEexperiment shows that the model slightly over-predicts the data if the same(constant) specific shear viscosity eta/s is assumed at both collisionenergies. In spite of differences in our assumptions for the equation of state,the freeze-out temperature, the chemical composition at freeze-out, and thestarting time for the hydrodynamic evolution, our results agree remarkably wellwith those of Luzum [M. Luzum, Phys. Rev. C 83, 044911 (2011)], indicatingrobustness of the hydrodynamic model extrapolations. Future measurements of thecentrality and transverse momentum dependence of spectra and elliptic flow foridentified hadrons predicted here will further test the model and shed light onpossible variations of the quark-gluon transport coefficients between RHIC andLHC energies.

Radial and elliptic flow in Pb+Pb collisions at the Large Hadron Collider from viscous hydrodynamic