Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe

HK: Physik der Hadronen und Kerne

HK 33: Heavy Ions IV

HK 33.1: Vortrag

Mittwoch, 13. März 2002, 14:00–14:15, E

Strangeness production in p+p interactions and collisions of light ions at E_lab=158 AGeV/c — •Claudia Höhne, Volker Friese, and Falk Pühlhofer — Fachbereich Physik, Philipps-Universität Marburg*

New data of the CERN experiment NA49 allow a systematic study of strangeness production varying not only the beam energy and the centrality of the interaction but also the size of the colliding system using protons and light ions as reaction partners. Of particular interest are small systems in which no phase transition into the QGP is expected and the role of multiple nucleon-nucleon collisions can be investigated. According to UrQMD calculations rescattering of newly created particles should play a minor role in such reactions.

The production of kaons and φ-mesons in p+p, C+C and Si+Si collisions was measured at the CERN SPS with a beam energy of 158 AGeV. Phase space distributions of these particles as well as for pions were extracted. Strangeness enhancement with respect to p+p collisions is found already in semicentral C+C interactions; it increases further in Si+Si reactions.

*supported by BMBF