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Darmstadt 2008 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 27: Physik mit schweren Ionen

HK 27.5: Gruppenbericht

Dienstag, 11. März 2008, 12:15–12:45, 2E

Investigation of strangeness production near threshold in Heavy Ion collisions with FOPI — •Krzysztof Piasecki for the FOPI collaboration — Physikalisches Institut, Universität Heidelberg, Germany — Institute of Experimental Physics, Univ. of Warsaw, Poland

Strangeness production and propagation inside the hot and dense nuclear matter has been the subject of intense investigation for more than a decade. The near-threshold production of strange mesons (K±,0[1,2], φ[3]) and hyperons (Λ[2], Σ*[4]) is of particular interest. It probes the region of the nuclear matter phase diagram, where strong interactions and the partial restoration of chiral symmetry might modify the properties of the medium as well as traversing particles.

We present an overview of experimental results from the FOPI detector installed at the SIS-18 accelerator of GSI with emphasis on the properties of recently measured short lived strange resonances.

This work is supported in part by BMBF 06HD190I.

[1] P. Crochet et al., Phys. Let. B 486 (2000) 6

[2] M. Merschmeyer et al., Phys. Rev. C 76 (2007) 024906

[3] A. Mangiarotti et al., Nucl. Phys. A 714 (2003) 89

[4] X. Lopez et al., arXiv:0710.5007v1, submitted to Phys. Rev. C

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