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The European Physical Journal C

, Volume 52, Issue 1, pp 203–209 | Cite as

Causal viscous hydrodynamics for central heavy-ion collisions II: meson spectra and HBT radii

  • P. RomatschkeEmail author
Regular Article - Theoretical Physics

Abstract

Causal viscous hydrodynamic fits to experimental data for pion and kaon transverse momentum spectra from central Au + Au collisions at \(\sqrt{s_{NN}}=200\,\text{GeV}\) are presented. Starting the hydrodynamic evolution at 1 fm/c and using small values for the relaxation time, reasonable fits up to moderate ratios, η/s≃0.4, can be obtained. It is found that a percentage of roughly 50 η/s to 75 η/s of the final meson multiplicity is due to viscous entropy production. Finally, it is shown that with increasing viscosity, the ratio of HBT radii Rout/Rside approaches and eventually matches the experimental data.

Keywords

Meson Spectrum Viscous Hydrodynamic Pion Spectrum Initial Energy Density Ideal Hydrodynamic 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag / Società Italiana di Fisica 2007

Authors and Affiliations

  1. 1.Institute for Nuclear TheoryUniversity of WashingtonSeattleUSA

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