International Conference on Exotic Atoms and Related Topics - EXA2014

The investigation of the kaon-nucleon interaction currently has been intensified in the last years due to new measuremnts of the Λ(1405) and indications on the existence of the 𝑝𝑝𝐾− bound state. Such results are heavily discussed since they can lead to new knowledge about the Antikaon-Nucleon interaction. The reaction pp->pK+Λ In the last years this reaction has been measured at the GSI-Darmstadt with the FOPI and the HADES Spectrometer at beam energies of 3.1 GeV and 3.5 GeV, respectively. New analysis methods have been developed in our group to understand quantitatively all the processes contributing to the pKLambda final state and a statistics of around 1000 and 20000 exclusively measured events has been collected with the FOPI and the HADES spectrometer, respectively. At the FOPI experiment a set of around 1.000 events and in the HADES experiment around 20.000 events of these exclusive reaction 𝑝𝑝 → 𝑝𝐾+Λ could be extracted. These reconstructed exclusive events were analyzed within the Bonn Gatchina Partial Wave Analysis framework, which provides a coherent solution including several resonant and non-resonant production channels. The results have shown, that the inclusion of interferences between different channels is an important effect, which has to be considered in the analysis. Based on the description of the Partial Wave Analysis an upper limit for the cross-section for the production of the 𝑝𝑝𝐾− could be determined. In this talk the analysis method of the Partial Wave Analysis as well as the results for the contribution of different production channels and the upper limit for the 𝑝𝑝𝐾− will be shown. Furthermore a strategy for a future analysis project based on the Partical Wave Analysis for different beam energies will be presented.