Mainz 2012 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 60: Schwerionenkollisionen und QCD Phasen

HK 60.5: Vortrag

Freitag, 23. März 2012, 12:00–12:15, P 5

Azimuthal emission patterns of K⁺ and K⁻ mesons in Ni+Ni collisions near thresholds — •Tae Im Kang — Physikalisches Institut, Heidelberg, Germany

Kaons, which are produced in nucleus-nucleus collisions at sub-threshold energies at SIS/GSI, are expected to be a very sensitive probe to investigate in-medium effects on hadrons. The microscopic transport models suggest that kaon properties are modified in dense nuclear matter. The modification can be understood as a consequence of a density dependent kaon-nucleon potential. Therefore, the measurement of charged kaon azimuthal emission patterns can provide important information on such an in-medium potential.

Here we are presenting results from measurements of sideward flow of K⁺ and K⁻ mesons in Ni+Ni collisions. Data are compared to transport models, Hadron String Dynamics and Isospin Quantum Dynamics, to investigate KN potentials in the dense nuclear medium.

This work was supported by BMBF 06HD9121I