1. Results of the ASY-EOS experiment at GSI: The symmetry energy at suprasaturation density
- Author
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S. Al-Homaidhi, Abdulrahman Alajlan, A. Wieloch, F. Amorini, Angelo Pagano, Marielle Chartier, E. Rosato, Roy Crawford Lemmon, D. G. Sarantites, S. Kupny, Z. Chajecki, Martin Veselsky, Tadaaki Isobe, M. B. Tsang, F. Riccio, Z. Basrak, Triestino Minniti, A. Chbihi, G. Cardella, P. Zambon, Piotr Pawłowski, J. Benlliure, Giuseppe Verde, Michele Papa, M. Adamczyk, L. Stuhl, Marina Trimarchi, M.D. Cozma, J. Brzychczyk, A. Trifirò, E. De Filippo, C. Caesar, Z. Matthews, Maria Colonna, Lauren Heilborn, F. Rizzo, S. Santoro, N. Kurz, S. Pirrone, S. Gannon, H. H. Wolter, M. Kiš, Luis Acosta, P. Cammarata, Igor Gašparić, Jack Winkelbauer, P. Lasko, Michael Heil, E. La Guidara, Y. Leifels, A. Le Fèvre, A. Krasznahorkay, K. Boretzky, M. Di Toro, B. Czech, I. Lombardo, Thomas Aumann, P. Wigg, E. V. Pagano, M. Boisjoli, K. Kezzar, Paola Marini, W. Reviol, P. Guazzoni, Michael Famiano, I. Skwirczyńska, L. Zetta, P. Russotto, Sherry Yennello, F. Porto, M. Mostazo, W. G. Lynch, H. Simon, M. Zoric, Riccardo Introzzi, M. Al-Garawi, P. Z. Wu, Yassid Ayyad, J. Łukasik, L. Grassi, Chiara Guazzoni, A. Budzanowski, D. M. Rossi, Zbigniew Sosin, Qingfeng Li, Mariano Vigilante, W. Trautmann, G. Lanzalone, Yongjia Wang, L. W. May, Lucrezia Auditore, G. Politi, Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), Université Sciences et Technologies - Bordeaux 1-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Russotto, P., Gannon, S., Kupny, S., Lasko, 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., De Filippo, E., Di Toro, M., Famiano, M., Gašparić, I., Grassi, L., Guazzoni, C., Guazzoni, P., Heil, M., Heilborn, L., Introzzi, R., Isobe, T., Kezzar, K., Kiš, M., Krasznahorkay, A., Kurz, N., La Guidara, E., Lanzalone, G., Le Fèvre, 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., and Zoric, M.
- Subjects
Physics ,Nuclear and High Energy Physics ,sezele ,010308 nuclear & particles physics ,Elliptic flow ,FOS: Physical sciences ,[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] ,01 natural sciences ,Charged particle ,Symmetry (physics) ,Nuclear physics ,symmetry energy ,neutron flow ,nuclear equation of state ,heavy-ion scattering ,relativistic quantum molecular dynamics ,Darmstadt GSI FAIR ,density dependence ,transport theory ,elliptic flow ,0.4 GeV/nucleon ,0103 physical sciences ,HEAVY-ION COLLISIONS ,EQUATION-OF-STATE ,MASS-RADIUS RELATION ,COLLECTIVE FLOW ,PION-PRODUCTION ,NEUTRON ,DEPENDENCE ,FRAGMENTATION ,SYSTEMATICS ,EMISSION ,Large Area Neutron Detector ,Neutron ,Nuclear Experiment (nucl-ex) ,Nuclear Experiment ,010306 general physics ,Nucleon ,Event (particle physics) ,Parametrization - Abstract
Directed and elliptic flows of neutrons and light charged particles were measured for the reaction 197Au+197Au at 400 MeV/nucleon incident energy within the ASY-EOS experimental campaign at the GSI laboratory. The detection system consisted of the Large Area Neutron Detector LAND, combined with parts of the CHIMERA multidetector, of the ALADIN Time-of-flight Wall, and of the Washington-University Microball detector. The latter three arrays were used for the event characterization and reaction-plane reconstruction. In addition, an array of triple telescopes, KRATTA, was used for complementary measurements of the isotopic composition and flows of light charged particles. From the comparison of the elliptic flow ratio of neutrons with respect to charged particles with UrQMD predictions, a value \gamma = 0.72 \pm 0.19 is obtained for the power-law coefficient describing the density dependence of the potential part in the parametrization of the symmetry energy. It represents a new and more stringent constraint for the regime of supra-saturation density and confirms, with a considerably smaller uncertainty, the moderately soft to linear density dependence deduced from the earlier FOPI-LAND data. The densities probed are shown to reach beyond twice saturation., Comment: 25 pages, 22 figures, accepted for publication in Physical Review C
- Published
- 2016
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