Eur. Phys. J. A (2011) 47: 58
https://doi.org/10.1140/epja/i2011-11058-7

Regular Article - Theoretical Physics

Spectra, elliptic flow and azimuthally sensitive HBT radii from the Buda-Lund model for = 200 GeV Au + Au collisions

¹ MTA KFKI RMKI, PO Box 49, H-1525, Budapest, Hungary
² Department of High Energy Physics, University of Lund, S-22362, Lund, Sweden
³ Eötvös University, H-1117, Budapest, Hungary
⁴ Department of Physics, Harvard University, 17 Oxford St, 02138, Cambridge, MA, USA
⁵ Univerzita Mateja Bela, Tajovského 40, SK-97401, Banská Bystrica, Slovakia
⁶ FNSPE, Czech Technical University in Prague, Břehová 7, CZ-11519, Prague, Czech Republic

Received: 29 December 2010
Accepted: 26 March 2011
Published online: 29 April 2011

Abstract

We present calculations of elliptic flow and azimuthal dependence of correlation radii in the ellipsoidally symmetric generalization of the Buda-Lund hydrodynamic model of hadron production in high-energy nuclear collisions. We compare them to data from RHIC by simultaneous fits to azimuthally integrated invariant spectra of pions, kaons and protons-antiprotons measured by PHENIX in Au + Au reactions at center-of-mass energy of 200 AGeV. STAR data were used for azimuthally sensitive two-particle correlation function radii and for the transverse momentum dependence of the elliptic flow parameter v ₂. We have found that the transverse flow is faster in the reaction plane than out of plane, which results in a reaction zone that gets slightly more elongated in-plane than out of plane. The model parameters extracted from the fits are shown and discussed.