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arXiv · 1101.2442

Influence of the shear viscosity of the quark-gluon plasma on elliptic flow in ultrarelativistic heavy-ion collisions

Harri Niemi·Gabriel S. Denicol·Pasi Huovinen·Etele Molnar·Dirk H. Rischke
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Abstract

We investigate the influence of a temperature-dependent shear viscosity over entropy density ratio eta/s on the transverse momentum spectra and elliptic flow of hadrons in ultrarelativistic heavy-ion collisions. We find that the elliptic flow in sqrt(s_NN) = 200 GeV Au+Au collisions at RHIC is dominated by the viscosity in the hadronic phase and in the phase transition region, but largely insensitive to the viscosity of the quark-gluon plasma (QGP). At the highest LHC energy, the elliptic flow becomes sensitive to the QGP viscosity and insensitive to the hadronic viscosity.

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Harri Niemi, Gabriel S. Denicol, Pasi Huovinen, Etele Molnar, Dirk H. Rischke. 2011-06-17. Influence of the shear viscosity of the quark-gluon plasma on elliptic flow in ultrarelativistic heavy-ion collisions. https://doi.org/10.1103/physrevlett.106.212302

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