München 2006 – wissenschaftliches Programm
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HK: Physik der Hadronen und Kerne
HK 60: Physik mit schweren Ionen
HK 60.3: Vortrag
Freitag, 24. März 2006, 14:45–15:00, D
Kaonic Cluster Production in Heavy Ion Reactions — •Xavier Lopez1, L. Fabbietti2, P. Kienle3, R. Krücken2, K. Suzuki2, T. Yamazaki4, and J. Zmeskal3 — 1Gesellschaft für Schwerionenforschung(GSI), Darmstadt, Germany — 2Technische Universität München — 3Stefan Meyer Institut — 4University of Tokyo
Recently, bound K− nuclear systems have been predicted [1] to form narrow discrete bound states with large binding energies of about 100 MeV. Due to the strong K−-p attraction, these so-called antikaonic clusters are expected to have high density (ρ/ρ0∼ 5 - 6), which are predicted of being produced and identified in heavy ion reactions [2]. We have made an attempt to identify these kaonic nuclear systems in heavy ion collision via their invariant masses reconstructed from their decay to Λ-p and Λ-d. We present our recent data from Ni+Ni and Al+Al systems at 1.93 and 1.9 AGeV, respectively. We will discuss the techniques to reconstruct Λ-p and Λ-d correlations with the FOPI detector and show preliminary results.
[1] Y. Akaishi and T. Yamazaki, Phys. Rev. C65 (2002) 044005.
[2] T. Yamazaki, A. Doté, Y. Akaishi, Phys.Lett. B587 (2004) 167.