A Blast Wave Model With Viscous Corrections

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 visco...

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Bibliographic Details
Published inJournal of physics. Conference series Vol. 832; no. 1; pp. 12056 - 12059
Main Authors Yang, Z, Fries, R J
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 25.04.2017
Subjects
Fluid dynamics
Heavy ions
Ionic collisions
Mathematical models
Parameters
Physics
Shear viscosity
Viscosity
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Summary: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 η/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 η/s is rather small.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/832/1/012056