Bochum 2009 – scientific programme
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HK: Fachverband Hadronen und Kerne
HK 7: Nuclear Structure and Dynamics II
HK 7.5: Talk
Monday, March 16, 2009, 15:15–15:30, H-ZO 50
High-Density Symmetry Energy in Heavy Ion Collisions* — Vaia Prassa1, Theodoros Gaitanos2, Graziella Ferini3, Maria Colonna3, Massimo Di Toro3, Vincenzo Greco3, and •Hermann Wolter4 — 1Univ. of Thessaloniki, Greece — 2Inst. Theor. Physics, Univ. Giessen, Germany — 3INFN; Lab. Naz. del Sud, Catania, Italy — 4Univ. of Munich, Munich, Germany
The density dependence of the nuclear symmetry energy is an issue of great current interest with respect to exotic nuclear structure, heavy ion collisions, neutron stars and supernovae. However, there are large differences in the predictions of theoretical models and rather few experimental constraints. This is particularly true for the symmetry energy at densities above saturation. Generally the symmetry energy is small relative to the bulk energy, and thus one has to rely on differences and ratios of observables. We discuss predictions for possible observables in relativistic heavy ion collisions, which have the potentiual of constraining the high density symmetry energy: (1) proton/neutron and light cluster flow and pre-equilibrium emission, and (2) pion and kaon production, especially yield ratios. We will particularly discuss the robustness of the predictions.
*Supported in part by DFG Cluster of Excellence "Origin and Structure of the Universe"