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arXiv · 1502.01675

The importance of the bulk viscosity of QCD in ultrarelativistic heavy-ion collisions

S. Ryu·J. -F. Paquet·C. Shen·G. S. Denicol·B. Schenke·S. Jeon·C. Gale
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Abstract

We investigate the consequences of a nonzero bulk viscosity coefficient on the transverse momentum spectra, azimuthal momentum anisotropy, and multiplicity of charged hadrons produced in heavy ion collisions at LHC energies. The agreement between a realistic 3D hybrid simulation and the experimentally measured data considerably improves with the addition of a bulk viscosity coefficient for strongly interacting matter. This paves the way for an eventual quantitative determination of several QCD transport coefficients from the experimental heavy ion and hadron-nucleus collision programs.

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S. Ryu, J. -F. Paquet, C. Shen, G. S. Denicol, B. Schenke, S. Jeon, C. Gale. 2015-09-12. The importance of the bulk viscosity of QCD in ultrarelativistic heavy-ion collisions. https://doi.org/10.1103/physrevlett.115.132301

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