Abstract. The elliptic-flow ratio of neutrons with respect to protons or light complex particles in reactions of heavy-ions at pre-relativistic energies has been proposed as an observable sensitive to the strength of the symmetry term of the nuclear equation of state at supra-saturation densities. The results obtained from the existing FOPI/LAND data for 197Au+197Au collisions at 400 MeV/nucleon in comparison with the UrQMD model simulations favoured a moderately soft symmetry term, but suffer from a considerable statistical uncertainty. These results have been confirmed by an independent analysis based on the Tübingen QMD simulations. 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. The present status of the data analysis is reported

The ASY-EOS experiment at GSI: investigating symmetry energy at supra-saturation densities / S., Lunardi; P., Russotto; M., Chartier; M. D., Cozma; E., De Filippo; A., Le Fèvre; S., Gannon; I., Gašparić; M., Kiš; S., Kupny; Y., Leifels; R. C., Lemmon; Q., Li; J., Łukasik; P., Marini; P., Pawłowski; S., Santoro; W., Trautmann; M., Veselsky; L., Acosta; M., Adamczyk; A., Al Ajlan; M., Al Garawi; S., Al Homaidhi; F., Amorini; L., Auditore; T., Aumann; Y., Ayyad; V., Baran; Z., Basrak; R., Bassini; J., Benlliure; C., Boiano; M., Boisjoli; K., Boretzky; J., Brzychczyk; A., Budzanowski; G., Cardella; P., Cammarata; Z., Chajecki; A., Chbihi; M., Colonna; B., Czech; M., Di Toro; M., Famiano; V., Greco; L., Grassi; C., Guazzoni; P., Guazzoni; M., Heil; L., Heilborn; Introzzi, Riccardo; T., Isobe; K., Kezzar; A., Krasznahorkay; N., Kurz; E., La Guidara; G., Lanzalone; P., Lasko; I., Lombardo; W. G., Lynch; Z., Matthews; L., May; T., Minniti; M., Mostazo; A., Pagano; M., Papa; S., Pirrone; R., Pleskac; G., Politi; F., Porto; R., Reifarth; W., Reisdorf; F., Riccio; F., Rizzo; E., Rosato; D., Rossi; H., Simon; I., Skwirczynska; Z., Sosin; L., Stuhl; A., Trifirò; M., Trimarchi; M. B., Tsang; G., Verde; M., Vigilante; A., Wieloch; P., Wigg; H. H., Wolter; P., Wu; S., Yennello; P., Zambon; L., Zetta; M., Zoric; P. G., Bizzeti; C., Bucci; M., Chiari; A., Dainese; P., Di Nezza; R., Menegazzo; A., Nannini; C., Signorini; J. J., Valiente Dobon. - In: EPJ WEB OF CONFERENCES. - ISSN 2100-014X. - 66:(2014), p. 03074. [10.1051/epjconf/20146603074]

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

INTROZZI, RICCARDO;
2014

Abstract

Abstract. The elliptic-flow ratio of neutrons with respect to protons or light complex particles in reactions of heavy-ions at pre-relativistic energies has been proposed as an observable sensitive to the strength of the symmetry term of the nuclear equation of state at supra-saturation densities. The results obtained from the existing FOPI/LAND data for 197Au+197Au collisions at 400 MeV/nucleon in comparison with the UrQMD model simulations favoured a moderately soft symmetry term, but suffer from a considerable statistical uncertainty. These results have been confirmed by an independent analysis based on the Tübingen QMD simulations. 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. The present status of the data analysis is reported
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2591382
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