The elliptic-flow ratio of neutrons with respect to protons in reactions of neutron rich heavy-ions systems at intermediate energies has been proposed as an observable sensitive to the strength of the symmetry term in the nuclear Equation Of State (EOS) at supra-saturation densities. The recent results obtained from the existing FOPI/LAND data for 197Au+197Au collisions at 400 MeV/nucleon in comparison with the UrQMD model allowed a first estimate of the symmetry term of the EOS but suffer from a considerable statistical uncertainty. In order to obtain an improved data set for Au+Au collisions and to extend the study to other systems, a new experiment was carried out at the GSI laboratory by the ASY-EOS collaboration in May 2011.

The elliptic-flow ratio of neutrons with respect to protons in reactions ofneutron rich heavy-ions systems at intermediate energies has been proposed asan observable sensitive to the strength of the symmetry term in the nuclearEquation Of State (EOS) at supra-saturation densities. The recent resultsobtained from the existing FOPI/LAND data for $^{197}$Au+$^{197}$Au collisionsat 400 MeV/nucleon in comparison with the UrQMD model allowed a first estimateof the symmetry term of the EOS but suffer from a considerable statisticaluncertainty. In order to obtain an improved data set for Au+Au collisions andto extend the study to other systems, a new experiment was carried out at theGSI laboratory by the ASY-EOS collaboration in May 2011.

The ASY-EOS experiment at GSI: investigating the symmetry energy at supra-saturation densities

L. Auditore;E. Geraci;GRECO, VINCENZO;Politi G;RIZZO, Francesca;
2013

Abstract

The elliptic-flow ratio of neutrons with respect to protons in reactions of neutron rich heavy-ions systems at intermediate energies has been proposed as an observable sensitive to the strength of the symmetry term in the nuclear Equation Of State (EOS) at supra-saturation densities. The recent results obtained from the existing FOPI/LAND data for 197Au+197Au collisions at 400 MeV/nucleon in comparison with the UrQMD model allowed a first estimate of the symmetry term of the EOS but suffer from a considerable statistical uncertainty. In order to obtain an improved data set for Au+Au collisions and to extend the study to other systems, a new experiment was carried out at the GSI laboratory by the ASY-EOS collaboration in May 2011.
The elliptic-flow ratio of neutrons with respect to protons in reactions ofneutron rich heavy-ions systems at intermediate energies has been proposed asan observable sensitive to the strength of the symmetry term in the nuclearEquation Of State (EOS) at supra-saturation densities. The recent resultsobtained from the existing FOPI/LAND data for $^{197}$Au+$^{197}$Au collisionsat 400 MeV/nucleon in comparison with the UrQMD model allowed a first estimateof the symmetry term of the EOS but suffer from a considerable statisticaluncertainty. In order to obtain an improved data set for Au+Au collisions andto extend the study to other systems, a new experiment was carried out at theGSI laboratory by the ASY-EOS collaboration in May 2011.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/20.500.11769/42904
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