Symmetry energy from elliptic flow in 197Au + 197Au
Nuclear Experiment
2011-04-28 v1
Abstract
The elliptic-flow ratio of neutrons with respect to protons or light complex particles in reactions of neutron-rich systems at relativistic energies is proposed as an observable sensitive to the strength of the symmetry term in the equation of state at supra-normal densities. The results obtained from the existing FOPI/LAND data for 197Au + 197Au collisions at 400 MeV/nucleon in comparison with the UrQMD model favor a moderately soft symmetry term with a density dependence of the potential term proportional to rho/rho_0^gamma with gamma = 0.9 +- 0.4.
Keywords
Cite
@article{arxiv.1101.2361,
title = {Symmetry energy from elliptic flow in 197Au + 197Au},
author = {P. Russotto and P. Z. Wu and M. Zoric and M. Chartier and Y. Leifels and R. C. Lemmon and Q. Li and J. Lukasik and A. Pagano and P. Pawlowski and W. Trautmann},
journal= {arXiv preprint arXiv:1101.2361},
year = {2011}
}
Comments
13 pages, 5 figures, submitted to Phys. Lett. B