ASY-EOS experiment at GSI: investigating the symmetry enenrgy at supra-satutation densities

Russotto, P.; Chartier, M.; De Filippo, E.; Le Fevre, A.; Gannon, S.; Ga??spari??, A.; Ki??, M.; Kupny, S.; Leifels, Y.; Lemmon, R.; Lukasik, J.; Marini, P.; Pagano, A.; Pawlowski, P.; Santoro, S.; Trautmann, W.; Veselsky, M.; Acosta, L.; Adamczyk, M.; Al Ajlan, A.; Al Garawi, M.; Al Homaidhi, S.; Amorini, F.; Auditore, L.; Aumann, T.; Ayyad, Y.; Baran, V.; Basrak, Z.; Benlliure, J.; Boiano, C.; Boisjoli, C.; Boretzky, K.; Brzychczyk, J.; Budzanowski, A.; Cardella, G.; Cammarata, P.; Chajecki, Z.; Chbihi, A.; Colonna, M.; Czech, B.; Di Toro, M.; Famiano, M.; Geraci, E.; Grassi, L.; Greco, V.; Guazzoni, C.; Guazzoni, P.; Heil, M.; Heilborn, L.; Introzzi, R.; Isobe, T.; Kezzar, K.; Krasznahorskay, A.; Kurz, N.; La Guidara, E.; Lanzalone, G.; Lasko, P.; Li, Q.; Lombardo, I.; Lynch, W. G.; Matthews, Z.; May, L.; Minniti, T.; Mostazo, M.; Papa, M.; Pirrone, S.; Politi, G.; Porto, F.; Reifarth, R.; Reisdorf, W.; Riccio, F.; Rizzo, F.; Rosato, Elio; Rossi, D.; Simon, H.; Skwirczynska, I.; Sosin, Z.; Trifirò, A.; Trimarchi, . M.; Tsang, M. B.; Verde, G.; Vigilante, Mariano; Wieloch, A.; Wigg, P.; Wolter, H. H.; Wu, P.; Yennello, S.; Zambon, P.; Zetta, L.; Zoric, M.

doi:10.1088/1742-6596/420/1/012092

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.

ASY-EOS experiment at GSI: investigating the symmetry enenrgy at supra-satutation densities / P., R., M., C., E., D.F., A., L.F., S., G., A., G., M., K., S., K., Y., L., R., L., J., L., P., M., A., P., P., P., S., S., W., T., M., V., L., A., M., A., A., A.A., et al.. - In: JOURNAL OF PHYSICS. CONFERENCE SERIES. - ISSN 1742-6596. - 420:(2013), pp. 1-11. (11th International Conference on Nucleus-Nucleus Collisions (NN2012) San Antonio, Texas, USA 27 May to 1 June 2012) [10.1088/1742-6596/420/1/012092].