Symmetry energy from elliptic flow in 197Au + 197Au

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.

13 pages, 5 figures, submitted to Phys. Lett. B

References in corpus (10)

• Nuclear symmetry energy probed by neutron skin thickness of nuclei
• Constraints on the high-density nuclear equation of state from the phenomenology of compact stars and heavy-ion collisions
• Systematics of pion emission in heavy ion collisions in the 1A GeV regime
• Isospin effects on sub-threshold kaon production at intermediate energies
• Elliptic flow and system size dependence of transition energies at intermediate energies
• Systematics of Stopping and Flow in Au+Au Collisions
• Double neutron-proton differential transverse flow as a probe for the high-density behavior of the nuclear symmetry energy
• Isospin dependence of relative yields of $K^{+}$ and $K^0$ mesons at 1.528 AGeV
• A model comparison of resonance lifetime modifications, a soft equation of state and non-Gaussian effects on $\pi -\pi$ correlations at FAIR/AGS energies
• The symmetry energy in nuclear reactions

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