Symmetry energy from elliptic flow in 197Au + 197Au (CROSBI ID 212686)
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Podaci o odgovornosti
Russotto, Paolo ; Wu, Peter Z. ; Zorić, Maja ; Chartier, Marielle ; Leifels, Yvonne ; Lemmon, Roy C. ; Li, Q. ; Jerzy, Lukasik ; Pagano, Angelo ; Pawlowski, Piotr ; Trautmann, Wolfgang
engleski
Symmetry energy from elliptic flow in 197Au + 197Au
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 γ(ρ/ρ0)(ρ/ρ0)γ with γ=0.9±0.4γ=0.9±0.4.
Heavy ion collisions ; Elliptic flow ; Symmetry energy
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