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Filippo, E. de; Russotto, P.; Acosta, L.; Adamczyk, M.; Al-Ajlan, A.; Al-Garawi, M.; Al-Homaidhi, S.; Amorini, F.; Auditore, L.; Aumann, T.; Ayyad, Y.; Basrak, Z.; Benlliure, J.; Boisjoli, M.; Boretzky, K.; Brzychczyk, J.; Budzanowski, A.; Caesar, C.; Cardella, G.; Cammarata, P.; Chajecki, Z.; Chartier, M.; Chbihi, A.; Colonna, M.; Cozma, M. D.; Czech, B.; Toro, M. di; Famiano, M.; Gannon, S.; Gašparić, I.; Grassi, L.; Guazzoni, C.; Guazzoni, P.; Heil, M.; Heilborn, L.; Introzzi, R.; Isobe, T.; Kezzar, K.; Kiš, M.; Krasznahorkay, A.; Kupny, S.; Kurz, N.; La Guidara, E.; Lanzalone, G.; Lasko, P.; Le Fevre, A.; Leifels, Y.; Lemmon, R. C.; Li, Q. F.; Lombardo, I.; Łukasik, J.; Lynch, W. G.; Marini, P.; Matthews, Z.; May, L.; Minniti, T.; Mostazo, M.; Pagano, A.; Pagano, E. V.; Papa, M.; Pawłowski, P.; Pirrone, S.; Politi, G.; Porto, F.; Reviol, W.; Riccio, F.; Rizzo, F.; Rosato, E.; Rossi, D.; Santoro, S.; Sarantites, D. G.; Simon, H.; Skwirczynska, I.; Sosin, Z.; Stuhl, L.; Trautmann, W.; Trifirò, A.; Trimarchi, M.; Tsang, M. B.; Verde, G.; Veselsky, M.; Vigilante, M.; Wang, Yongjia; Wieloch, A.; Wigg, P.; Winkelbauer, J.; Wolter, H. H.; Wu, P.; Yennello, S.; Zambon, P.; Zetta, L.; Zoric, M. (2017): The symmetry energy at suprasaturation density and the ASYEOS experiment at GSI. In: Xiith Quark Confinement and the Hadron Spectrum, Vol. 137, 9002
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Abstract

The ASY-EOS experiment at GSI laboratory measured the direct and elliptic flow of neutrons and light charged particles in the reaction Au-197+Au-197 at 400 A MeV incident energy. The ratio of elliptic flow of neutrons with respect to that of the light charged particles was used as main experimental observable to probe the density dependence of the symmetry energy term of the nuclear equation of state. Results, obtained by comparison of the experimental data with the UrQMD model predictions, strongly support a moderately soft to linear density dependence of the symmetry energy at suprasaturation densities below 2 rho 0.

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