Neutron-proton elliptic flow in Au + Au

A. Pagano; J. Lukasik; M. Chartier; P. Pawlowski; P. Russotto; P.Z. Wu; Q. Li; R.C. Lemmon; W. Trautmann; Y. Leifels

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Neutron-proton elliptic flow in Au + Au

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arxiv 0907.2822 v1 pith:MWQ4GSU4 submitted 2009-07-16 nucl-ex

Neutron-proton elliptic flow in Au + Au

W. Trautmann , M. Chartier , Y. Leifels , R.C. Lemmon , Q. Li , J. Lukasik , A. Pagano , P. Pawlowski

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P. Russotto P.Z. Wu

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keywords termellipticflowgammasymmetrycollisionscomplexdata

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The elliptic flow 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 = 0.9 +- 0.3.

Neutron-proton elliptic flow in Au + Au

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