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Köln 2004 – scientific programme

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HK: Physik der Hadronen und Kerne

HK 41: Heavy Ions IV

HK 41.1: Group Report

Thursday, March 11, 2004, 13:30–14:00, E

Azimuthal emission pattern of K+ and K at SIS energies[*] — •Mateusz Płoskoń — GSI Darmstadt, Germany

The Kaos Collaboration has been investigating the production of kaons and antikaons in Au+Au and Ni+Ni collisions at beam energies between 1 and 2AGeV as a function of the collision centrality, the particle energy and the emission angles[1]. The anisotropy of the azimuthal emission pattern of K+ mesons provides evidence for a repulsive kaon-nucleon potential in the nuclear medium[2]. New information on the in-medium potentials of antikaons is expected from the measurement of their azimuthal angle distributions. Recent experimental results will be discussed.

[*] Supported by BMBF and GSI

[1] A.Förster, F. Uhlig et al, PRL 91 (2003) 152301

[2] Y.Shin et al PRL 81 (1998) 1576

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