Darmstadt 2008 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 27: Physik mit schweren Ionen

HK 27.7: Vortrag

Dienstag, 11. März 2008, 13:00–13:15, 2E

Charged kaon and φ measurements in Ni+Ni heavy-ion collisions at 1.9A GeV with the FOPI detector. — •Tae Im Kang for the FOPI collaboration — GSI, Darmstadt — Korea University, Seoul

The FOPI collaboration has studied the bulk properties of nuclear matter as well as the in-medium effects on hadrons in a hot and dense environment. The in-medium properties of hadrons are assessed by the measurements of yield and momentum distributions. Kaons and φ-mesons have obtained particular interest. Both charged kaons and φ-mesons are produced in the nucleus-nucleus collisions at sub-threshold energies at SIS/GSI [1].

To investigate these observables FOPI has successfully upgraded its kaon identification capabilities with a novel Time-of-Flight detector, Multi-strip Multi-gap RPC(MMRPC) in 2007 [2]. With enhanced Time-of-Flight resolution the charged kaon identification is extended up to 1 GeV/c. In this presentation we show first results with the improved FOPI setup for charged kaon and φ production in Ni+Ni collisions at 1.9A GeV.

This work was supported by EU/FP6 I3 HP, R113-CT-2004-506078; BMBF 06HD190i; DFG 446 KOR 113/76/0-5.

[1] A. Mangiarotti et al., Nucl. Phys. A 714, 89, 2003;

K. Wisniewski et al., Eur. Phy. Journ. A 9, 515, 2000.

[2] A. Schüttauf et al., Nucl. Phys. B Proc. Supp. 158, 52, 2006.