Viscous hydrodynamics description of φ meson production in Au+Au and Cu+Cu collisions · arXivDesk0901.4181Jan 27, 20098 pages, 10 figures. Recent STAR data on $φ$ production in Au+Au and Cu+Cu are analysed in viscous hydrodynamics
Viscous hydrodynamics description of φ meson production in Au+Au and Cu+Cu collisions
A. K. Chaudhuri
Abstract
In the Israel-Stewart's theory of 2nd order dissipative hydrodynamics, we have simulated φ production in Au+Au and Cu+Cu collisions at sNN
=200 GeV. Evolution of QGP fluid with viscosity over the entropy ratio
=0.25, thermalised at
=0.2 fm, with initial energy density
=5.1
explains the experimental data on
multiplicity, integrated
, mean
,
spectra and elliptic flow in central and mid-central Au+Au collisions.
=0.25 is also consistent with centrality dependence of
spectra in Cu+Cu collisions. The central energy density in Cu+Cu collisions is
=3.48
.