Universal scaling of the elliptic flow data at RHIC

Csanad, M.; Csorgo, T.; Ster, A.; Lorstad, B.; Ajitanand, N. N.; Alexander, J. M.; Chung, P.; Holzmann, W. G.; Issah, M.; Lacey, R. A.

Universal scaling of the elliptic flow data at RHIC

Authors

Description

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.
4 pages, 3 figures, 1 table