期刊
PHYSICAL REVIEW LETTERS
卷 106, 期 21, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.106.212302
关键词
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资金
- Helmholtz International Center for FAIR
- Extreme Matter Institute (EMMI)
- BMBF [06FY9092]
- OTKA/NKTH [81655]
- AvH Foundation
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 root 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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