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

11th International Conference on Clustering Aspects of Nuclear Structure and Dynamics

Russotto, P.^1 ; Acosta, L.^2,3 ; Adamczyk, M.^4 ; Al-Ajlan, A.^5 ; Al-Garawi, M.^6 ; Al-Homaidhi, S.^5 ; Amorini, F.^2 ; Auditore, L.^7,8 ; Aumann, T.^9,10 ; Ayyad, Y.^11 ; Basrak, Z.^12 ; Benlliure, J.^11 ; Boisjoli, M.^13 ; Boretzky, K.^10 ; Brzychczyk, J.^4 ; Budzanowski, A.^14 ; Caesar, C.^9 ; Cardella, G.^1 ; Cammarata, P.^15 ; Chajecki, Z.^16 ; Chartier, M.^17 ; Chbihi, A.^10 ; Colonna, M.^2 ; Cozma, M.D.^18 ; Czech, B.^14 ; De Filippo, E.^1 ; Di Toro, M.^2,19 ; Famiano, M.^20 ; Gannon, S.^17 ; Gapari, I.^9,12 ; Grassi, L.^12 ; Guazzoni, C.^21,22 ; Guazzoni, P.^21,23 ; Heil, M.^10 ; Heilborn, L.^15 ; Introzzi, R.^24 ; Isobe, T.^25 ; Kezzar, K.^6 ; Ki, M.^10 ; Krasznahorkay, A.^26 ; Kupny, S.^4 ; Kurz, N.^10 ; La Guidara, E.^1 ; Lanzalone, G.^2,27 ; Lasko, P.^4 ; Le Fèvre, A.^10 ; Leifels, Y.^10 ; Lemmon, R.C.^28 ; Li, Q.F.^29 ; Lombardo, I.^30,31 ; Lukasik, J.^14 ; Lynch, W.G.^16 ; Marini, P.^13,15 ; Matthews, Z.^17 ; May, L.^15 ; Minniti, T.^1 ; Mostazo, M.^11 ; Pagano, A.^1 ; Pagano, E.V.^2,19 ; Papa, M.^1 ; Pawlowski, P.^14 ; Pirrone, S.^1 ; Politi, G.^1,19 ; Porto, F.^2,19 ; Reviol, W.^32 ; Riccio, F.^21,22 ; Rizzo, F.^2,19 ; Rosato, E.^30,31 ; Rossi, D.^9,10 ; Santoro, S.^7,8 ; Sarantites, D.G.^2,3 ; Simon, H.^10 ; Skwirczynska, I.^14 ; Sosin, Z.^4 ; Stuhl, L.^26 ; Trautmann, W.^10 ; Trifirò, A.^7,8 ; Trimarchi, M.^7,8 ; Tsang, M.B.^16 ; Verde, G.^1 ; Veselsky, M.^33 ; Vigilante, M.^30,31 ; Wang, Yongjia^29 ; Wieloch, A.^4 ; Wigg, P.^17 ; Winkelbauer, J.^16 ; Wolter, H.H.^34 ; Wu, P.^17 ; Yennello, S.^15 ; Zambon, P.^21,22 ; Zetta, L.^21,23 ; Zoric, M.^12

INFN-Sezione di Catania, Catania, Italy^1

INFN-Laboratori Nazionali Del Sud, Catania, Italy^2

Universidad Nacional Autònoma de Mèxico, Mexico^3

Marian Smoluchowski Institute of Physics, Jagiellonian University, Krakòw, Poland^4

KACST Riyadh, Riyadh, Saudi Arabia^5

King Saud University, Riyadh, Saudi Arabia^6

INFN-Gruppo Collegato di Messina, Messina, Italy^7

Università di Messina, Messina, Italy^8

Technische Universität, Darmstadt, Germany

(10) GSI Helmholtzzentrum, Darmstadt, Germany

(11) University of Santiago de Compostela, Santiago de Compostela, Spain

(12) Ruder Bokovic Institute, Zagreb, Croatia

(13) GANIL, Caen, France

(14) H. Niewodniczàski Institute of Nuclear Physics, Krakòw, Poland

(15) Texas AandM University, College Station, United States

(16) NSCL Michigan State University, East Lansing, United States

(17) University of Liverpool, Liverpool, United Kingdom

(18) IFIN-HH, Magurele-Bucharest, Romania

(19) Università di Catania, Catania, Italy

(20) Western Michigan University, United States

(21) INFN-Sezione di Milano, Milano, Italy

(22) Politecnico di Milano, Milano, Italy

(23) Università degli Studi di Milano, Milano, Italy

(24) INFN, Politecnico di Torino, Torino, Italy

(25) RIKEN, Wako, Japan

(26) Institute of Nuclear Research, Debrecen, Hungary

(27) Università Kore, Enna, Italy

(28) STFC Laboratory, Daresbury, United Kingdom

(29) Huzhou Teachers College, China

(30) INFN-Sezione di Napoli, Napoli, Italy

(31) Università di Napoli, Napoli, Italy

(32) Washington University, St. Louis, United States

(33) Institute of Physics, Slovak Academy of Sciences, Bratislava, Slovakia

(34) LMU, München, Germany^9

关键词: Light charged particles;    Linear density;    Nuclear equation of state;    Saturation density;    Transport modeling;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/863/1/012059/pdf
DOI  :  10.1088/1742-6596/863/1/012059

来源: IOP

【 摘 要 】

In the ASY-EOS experiment flows of neutrons and light charged particles were measured for197Au+197Au 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 ∼ 2.