Bonn 2010 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 3: Struktur und Dynamik von Kernen I

HK 3.3: Vortrag

Montag, 15. März 2010, 17:15–17:30, HG II

ASYEOS: probing symmetry energy term in the nuclear equation of state with neutron and proton flow — •Mladen Kiš and Yvonne Leifels — GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt

Understanding the symmetry term in the nuclear equation of state at supra-saturation densities is of fundamental importance for many aspects of nuclear physics and astrophysics. Neutron and proton elliptic flow in relativistic heavy ion collisions in the energy range between 0.4 and 1.0 AGeV is predicted [1] to provide quantitative information on the symmetry term by various models. Data on simultaneous measurement of neutron and proton flow in Au+Au collisions at various energies have been obtained in a combined experiment of the LAND neutron detector and the forward wall of the FOPI detector at GSI [2] already in the 90’s. We will present a re-analysis of these data and a comprehensive comparisons to model predictions, discuss their sensitivity to the symmetry term of the nuclear equation of state and further perspectives.

[1] B.-A. Li et al., Phys.Rep. 464(2008) 113.

[2] Y. Leifels et al., Phys.Rev.Lett. 71(1993) 963.

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