Heidelberg 2015 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 56: Hadron Structure and Spectroscopy 11
HK 56.6: Vortrag
Donnerstag, 26. März 2015, 16:00–16:15, T/SR25
Analysis of the reaction p + p -> p + K+ + Λ with Partial Waves* — •R. Münzer1, S. Lu1, E. Epple1, L. Fabbietti1, J. Ritman2, E. Roderburg2, and F. Hauenstein2 — 1E12,Physik Department,Excellence Cluster Universe - Technische Universität München — 2Forschungszentrum Jülich
The investigation of the kaon-nucleon interaction currently has been intensified in the last years by some contradicting results on the existence of the ppK− bound state. Such results are heavily discussed since they can lead to new knowledge about the K-N interaction. In the last years the reaction pp−>pK+Λ has been measured at the GSI with the FOPI and the HADES Spectrometer at beam energies of 3.1 GeV and 3.5 GeV, respectively.
The reconstructed exclusive events were analyzed within the Bonn Gatchina PWA framework, which provides a coherent solution including several resonant and non-resonant production channels, which allowed the extraction of an upper limit for the cross-section for the production of the ppK−.
Based on these results an analysis of further experimental results obtained by the COSY-TOF collaboration will be analysed with these methods with the goal of a further improvement of the common understanding of the production mechanism, including final state interaction and the Σ-N cusp effect.
In this talk the analysis method of the PWA, the extracted value for the ppK− and the results from the ongoing combined analysis will be shown.
*supported by the DFG Project FA 898/2-1, BMBF 05P12WOGHH, Excellence Cluster Universe.