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HK: Fachverband Physik der Hadronen und Kerne

HK 54: Poster - Hadronenstruktur und -spektroskopie

HK 54.2: Poster

Wednesday, March 6, 2013, 16:45–19:00, HSZ 3.OG

Search for ppK⁻ - Status of the FOPI p-p Experiment* — •Robert Muenzer — Excellence Cluster Universe - TU München

The investigation of the kaon-nucleon interaction has been intensified in the last year due to new results on Λ(1405) (1) and indications on the existence of the ppK⁻ bound state (2).
In a dedicated experiment at the FOPI Sepctrometer at GSI in Darmstadt the possible production of this state in proton proton collision is investigated. During this experiment an additional detector was used to select during data taking events containing Lambda Hyperons (3). This contribution will show the status of the ongoing analysis, expecially the reconstuction of the pK⁺Λ final state, with the help of a kinemtical refit tool, which allows an improvement of the signal quality.
(1) L. Fabbietti, J. Siebenson / arXiv:1208.0205
(2) T. Yamazaki, M. Maggiora, P. Kienle / PRL 104 / 132502 (2010)
(3) M. Berger, L. Fabbietti, R. Muenzer / in press