A Blast Wave Model With Viscous Corrections

Abstract

Hadronic observables in the final stage of heavy ion collision can be described well by fluid dynamics or blast wave parameterizations. We improve existing blast wave models by adding shear viscous corrections to the particle distributions in the Navier-Stokes approximation. The specific shear viscosity $\eta /s$ of a hadron gas at the freeze-out temperature is a new parameter in this model. We extract the blast wave parameters with viscous corrections from experimental data which leads to constraints on the specific shear viscosity at kinetic freeze-out. Preliminary results show $\eta /s$ is rather small.

arXiv commentProceedings for HQ 2016,4 pages,3 figures

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• Higher order anisotropies in the Buda-Lund model: Disentangling flow and density field anisotropies
• Exploring Anisotropic flow via the Boltzmann Transport Equation Employing the Tsallis Blast Wave Description at LHC energies
• Phenomenological models of two-particle correlation distributions on transverse momentum in relativistic heavy-ion collisions