Differential Neutron-Proton Squeeze-out
Abstract
The elliptic flow (squeeze-out) of neutrons, protons and 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. Preliminary results from a study of the existing FOPI/LAND data for 197Au + 197Au collisions at 400 A MeV 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 = 0.6+-0.3.
Cite
@article{arxiv.0904.3495,
title = {Differential Neutron-Proton Squeeze-out},
author = {W. Trautmann and M. Chartier and Y. Leifels and R. C. Lemmon and Q. Li and J. Lukasik and A. Pagano and P. Pawlowski and P. Russotto and P. Wu},
journal= {arXiv preprint arXiv:0904.3495},
year = {2010}
}
Comments
2 pages, 1 figure, contribution to proceedings of International School of Nuclear Physics, 30th Course, Heavy-Ion Collisions from the Coulomb Barrier to the Quark-Gluon Plasma, Erice-Sicily: 16 - 24 September 2008