Buda–Lund hydro model for ellipsoidally symmetric fireballs and the elliptic flow at RHIC Original Research Article

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 v2(η), as determined recently by the PHOBOS experiment for Au + Au collisions at View the MathML source and 200 GeV. With the same set of parameters, the Buda–Lund model describes also the transverse momentum dependence of v2 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.