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HK: Fachverband Hadronen und Kerne

HK 45: Heavy Ion Collisions and QCD phases

HK 45.4: Vortrag

Mittwoch, 18. März 2009, 15:00–15:15, H-ZO 10

Strangeness fluctuations and MEMO production at FAIR — •Jan Steinheimer-Froschauer¹, Michael Mitrovski^1,2, Tim Schuster^1,2, Hannah Petersen^1,2, Marcus Bleicher¹, and Horst Stoecker^1,2,3 — ¹Institut für Theoretische Physik, Johann Wolfgang Goethe-Universität, Max-von-Laue-Str. 1, 60438 Frankfurt am Main, Germany — ²Frankfurt Institute for Advanced Studies (FIAS), Johann Wolfgang Goethe-Universität, Ruth-Moufang-Str. 1, 60438 Frankfurt am Main, Germany — ³GSI - Helmholtzzentrum für Schwerionenforschung mbH, Planckstr. 1, Darmstadt

We apply a coupled transport-hydrodynamics model to discuss the production of multi-strange meta-stable objects in Pb+Pb reactions at the FAIR facility. In addition to making predictions for yields of these particles we are able to calculate particle dependent rapidity and momentum distributions. We argue that the FAIR energy regime is the optimal place to search for multi-strange baryonic object (due to the high baryon density, favoring a distillation of strangeness). Additionally, we show results for strangeness and baryon density fluctuations. Using the UrQMD model we calculate the strangeness separation in phase space which might lead to an enhanced production of MEMOs compared to models that assume global thermalization.