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HK: Fachverband Physik der Hadronen und Kerne

HK 36: Postersitzung

HK 36.10: Poster

Mittwoch, 17. März 2010, 14:00–16:00, HG Aula

K_s⁰ and Λ production in p+p and p+Nb collisions at 3.5 GeV with HADES — •Alexander Prehn — TU München, 85748 Garching

To contribute to the understanding of the kaon- and Λ-nucleon potential, K_s⁰-mesons and Λ-hyperons produced in p+p and p+Nb reactions at 3.5 GeV incoming energy at the HADES experiment were reconstructed. The HADES spectrometer operates at the heavy-ion synchrotron SIS at GSI in Darmstadt. An overall statistic of 1.2 · 10⁹ and 4.2 · 10⁹ reactions has been recorded respectively in the two reactions. A total of about 100.000 K_s⁰ and 200.000 Λ were reconstructed for the p+p reaction, about 500.000 K_s⁰ are found for p+Nb. In particular the low pt range, down to 50 MeV/c, was accessible via this measurement, providing an interesting tool to compare the meson behavior in p-p and p-nucleus reactions. First analysis results will be presented for both systems.
This work has been supported by the Excellence Cluster ’Universe’ and Helmholtz Gesellschaft.