Buda-Lund hydro model for ellipsoidally symmetric fireballs and the elliptic flow at RHIC
Absztrakt:
The ellipsoidally symmetric extension of Buda-Lund hydrodynamic model
is shown here to yield a natural description of the pseudorapidity
dependence of the elliptic flow upsilon(2)(eta)), as determined
recently by the PHOBOS experiment for Au + Au collisions at root(S)NN =
130 and 200 GeV. With the same set of parameters, the Buda-Lund model
describes also the transverse momentum dependence of upsilon(2) of
identified particles at mid-rapidity. The results confirm the
indication for quark deconfinement in Au+Au collisions at RHIC,
obtained from a successful Buda-Lund hydro model fit to the single
particle spectra and two-particle correlation data, as measured by the
BRAHMS, PHOBOS, PHENIX and STAR Collaborations. (C) 2004 Elsevier B.V.
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