arXiv:nucl-th/0512078·v4·Nuclear Theory
Universal scaling of the elliptic flow data at RHIC
M. Csanad · T. Csorgo · A. Ster · B. Lorstad · N. N. Ajitanand · J. M. Alexander · P. Chung · W. G. Holzmann · M. Issah · R. A. Lacey
Abstract
Recent PHOBOS measurements of the excitation function for the pseudo-rapidity dependence of elliptic flow in Au+Au collisions at RHIC, have posed a significant theoretical challenge. Here we show that these differential measurements, as well as the RHIC measurements on transverse momentum satisfy a universal scaling relation predicted by the Buda-Lund model, based on exact solutions of perfect fluid hydrodynamics. We also show that recently found transverse kinetic energy scaling of the elliptic flow is a special case of this universal scaling.
Comments: 4 pages, 3 figures, 1 table