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HK: Fachverband Physik der Hadronen und Kerne

HK 40: Hadron Structure and Spectroscopy 9

HK 40.4: Talk

Wednesday, March 25, 2015, 15:30–15:45, T/SR19

Determination of the Spin Triplet pΛ Scattering Length from the Reaction p^→p → pK⁺Λ — •Florian Hauenstein for the COSY-TOF collaboration — Forschungszentrum Jülich, Deutschland

The p^→p → pK⁺Λ reaction was measured with the COSY-TOF detector using a polarized proton beam of 2.7 GeV/c. These data are used to not only study the production mechanism via Dalitz plot and polarization observables, but also to extract the spin effective pΛ scattering length from the final state interaction in the pΛ invariant mass spectrum. Furthermore, it is possible to determine the spin triplet pΛ scattering length using the dependence of the Kaon analyzing power on the pΛ invariant mass.

In this talk the extraction method as well as the results on the spin effective and spin triplet pΛ scattering length will be shown. In addition, the dependence of the Kaon analyzing power on the pΛ invariant mass will be given. The systematic errors of the extracted values will be discussed