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

Russotto, P.; Chartier, M.; De Filippo, E.; Le Fevre, A.; Gannon, S.; Gaˇspari´c, I.; Kiˇs, M.; Kupny, S.; Leifels, Y.; Lemmon, R. C.; Lukasik, J.; Marini, P.; Pagano, A.; Paw lowski, 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, M.; Boretzky, K.; Brzychczyk, J.; Budzanowski, A.; Cardella, G.; Cammarata, P.; Chajecki, Z.; Chbihi, A.; Colonna, M.; Cozma, D.; Czech, B.; Di Toro, M.; Famiano, M.; Geraci, E.; Greco, Vincenzo; Grassi, L.; Guazzoni, C.; Guazzoni, P.; Heil, M.; Heilborn, L.; Introzzi, R.; Isobe, T.; Kezzar, K.; Krasznahorkay, 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, Francesca; Rosato, E.; Rossi, D.; Simon, H.; Skwirczynska, I.; Sosin, Z.; Stuhl, L.; Trifirò, A.; Trimarchi, M.; Tsang, M. B.; Verde, G.; Vigilante, M.; Wieloch, A.; Wigg, P.; Wolter, H. H.; Wu, P.; Yennello, S.; Zetta, P. Zambon L.; Zoric, M.

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

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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.

Titolo:	The ASY-EOS experiment at GSI: investigating the symmetry energy at supra-saturation densities
Autori interni:	P. Russotto M. Chartier E. De Filippo A. Le Fevre S. Gannon I. Gaˇspari´c M. Kiˇs S. Kupny Y. Leifels R. C. Lemmon J. Lukasik P. Marini A. Pagano P. Paw lowski S. Santoro W. Trautmann M. Veselsky L. Acosta M. Adamczyk A. Al Ajlan M. Al Garawi S. Al Homaidhi F. Amorini AUDITORE, LUCREZIA T. Aumann Y. Ayyad V. Baran Z. Basrak J. Benlliure C. Boiano M. Boisjoli K. Boretzky J. Brzychczyk A. Budzanowski G. Cardella P. Cammarata Z. Chajecki A. Chbihi M. Colonna D. Cozma B. Czech M. Di Toro M. Famiano GERACI, Elena Irene GRECO, VINCENZO L. Grassi C. Guazzoni P. Guazzoni M. Heil L. Heilborn R. Introzzi T. Isobe K. Kezzar A. Krasznahorkay N. Kurz E. La Guidara G. Lanzalone P. Lasko Q. Li I. Lombardo W. G. Lynch Z. Matthews L. May T. Minniti M. Mostazo M. Papa S. Pirrone POLITI, Giuseppe F. Porto R. Reifarth W. Reisdorf F. Riccio RIZZO, Francesca 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 mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2013
Rivista:	JOURNAL OF PHYSICS. CONFERENCE SERIES
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.
Handle:	http://hdl.handle.net/20.500.11769/42904
Appare nelle tipologie:	4.1 Contributo in Atti di convegno

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