Symmetry energy from elliptic flow in 197Au +197Au

2011/01/12 by P. Russotto, P. Z. Wu, P. Wu +13 · 4 citations
Physics and Astronomy · #Elliptic flow #Flow (mathematics) #Heavy ion #High-Energy Particle Collisions Research #Mechanics #Neutron #Nuclear physics #Nuclear physics research studies #Nucleon #Observable #Particle physics #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Symmetry (geometry) #Term (time) #nucl-ex

paper · pdf · doi:10.1016/j.physletb.2011.02.033

published as Phys.Lett.B697:471-476,2011 · 13 pages, 5 figures, submitted to Phys. Lett. B

arxiv created 2011/01/12 · openalex publication_date 2011/02/17 · arxiv updated 2011/04/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

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 (ρ/ρ0)γ with γ=0.9±0.4.

Citations

• Evolution of Nuclear Spectra with Nuclear Forces
• A model comparison of resonance lifetime modifications, a soft equation of state and non-Gaussian effects on π–π correlations at FAIR/AGS energies
• Microscopic models for ultrarelativistic heavy ion collisions
• Circumstantial Evidence for a Soft Nuclear Symmetry Energy at Suprasaturation Densities

Cited by

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• Clusterized nuclear matter in the (proto-)neutron star crust and the symmetry energy
• The density- and isospin-dependent Δ-formation cross section and its decay width
• Constraining the high-density behavior of the nuclear symmetry energy with the tidal polarizability of neutron stars