2009/09/30 by A. K. Chaudhuri
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #nucl-th
paper · pdf · doi:10.1016/j.physletb.2009.10.068
published as Phys.Lett.B681:418-422,2009 · 5 pages, 6 figures. Version accepted for publication in Phys. Lett. B
arxiv created 2009/10/21 · openalex publication_date 2009/10/25 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/02
In the Israel–Stewart's theory of dissipative hydrodynamics, we have analysed the STAR data on ϕ meson production in Au + Au collisions at s=200 GeV. From a simultaneous fit to ϕ mesons multiplicity, mean pT and integrated v2, we obtain a phenomenological estimate of QGP viscosity, η/s=0.07±0.03±0.14, the first error is due to the experimental uncertainty in STAR measurements, the second reflects the uncertainties in initial and final conditions of the fluid.