Frankfurt 2014 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 42: Schwerionenkollisionen und QCD Phasen

HK 42.4: Vortrag

Donnerstag, 20. März 2014, 15:00–15:15, HZ 7

Charged Kaon Production in Au+Au-Collisions at 1.23 AGeV with HADES — •Heidi Schuldes for the HADES collaboration — Goethe-Universität Frankfurt

In the energy regime of 1-2 AGeV, strangeness is produced below its elementary production threshold, this results in a steep excitation function. Due to their quark content, positive and negative kaons have different elementary production thresholds. Furthermore, K⁺ are supposed to feel a repulsive kaon nucleon potential, while K⁻ can be resonantly absorbed by nucleons.

HADES, installed at the Helmholtzzentrum für Schwerionenforschung (GSI) in Darmstadt, Germany, provides excellent capability to measure rare kaon signals. In April and May 2012, 7.3 billion Au(1.23 GeV per nucleon)+Au collisions have been recorded by the HADES detector. In this contribution preliminary particle spectra of charged kaons measured in Au+Au reactions will be presented. The results will be discussed with respect to the production mechanism.

Supported by BMBF (05P12RFGHJ), Helmholtz Alliance EMMI, HIC for FAIR, HGS-HIRe and H-QM.