Probing the Symmetry Term of the Nuclear Equation of State at High Baryonic Densities

P. Russotto,L. Acosta,M. Adamczyk,A. Al-Ajlan,M. Al-Garawi, S. Al-Homaidhi, F. Amorini, L. Auditore, T. Aumann,Y. Ayyad, Z. Basrak,J. Benlliure, M. Boisjoli,K. Boretzky, J. Brzychczyk, A. Budzanowski,C. Caesar, G. Cardella,P. Cammarata,Z. Chajecki,M. Chartier,A. Chbihi,M. Colonna,M. D. Cozma,B. Czech,E. De Filippo,M. Di Toro,M. Famiano, S. Gannon,I. Gasparic,L. Grassi,C. Guazzoni, P. Guazzoni,M. Heil, L. Heilborn,R. Introzzi,T. Isobe,K. Kezzar,M. Kis,A. Krasznahorkay, S. Kupny,N. Kurz,E. La Guidara,G. Lanzalone,P. Lasko,A. Le Fevre,Y. Leifels, R. C. Lemmon,Q. F. Li,I. Lombardo,J. Lukasik,W. G. Lynch,P. Marini,Z. Matthews,L. May,T. Minniti, M. Mostazo,A. Pagano,E. V. Pagano,M. Papa,P. Pawlowski, S. Pirrone,G. Politi, F. Porto,W. Reviol,F. Riccio,F. Rizzo,E. Rosato,D. Rossi,S. Santoro,D. G. Sarantites, H. Simon, I. Skwirczynska, Z. Sosin, L. Stuhl, W. Trautmann, A. Trifiro,M. Trimarchi,M. B. Tsang,G. Verde, M. Veselsky, M. Vigilante,Yongjia Wang,A. Wieloch,P. Wigg, J. Winkelbauer,H. H. Wolter,P. Wu,S. Yennello,P. Zambon,L. Zetta, M. Zoric

Journal of Physics Conference Series（2017）

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摘要

In the ASY-EOS experiment flows of neutrons and light charged particles were measured for Au-197+Au-197 collisions at 400 MeV/nucleon, in order to investigate the strength of the symmetry term of the nuclear equation of state at supra-saturation densities. By comparing the experimental data with the UrQMD transport model predictions, we have extracted a new constraint in agreement with the moderately soft to linear density dependence obtained in the former analysis on FOPI-LAND data, but reducing the associated uncertainty by a factor similar to 2.

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关键词

nuclear equation,symmetry term

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