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The near threshold production of K+K- pairs in proton-proton collisions hasbeen investigated at the cooler synchrotron COSY below and above the thresholdfor the \phi meson production. The experimental excitation function determinedfor the pp-->ppK+K- reaction differs from theoretical expectations includingproton-proton final state interaction. The discrepancy may be assigned to theinfluence of K+K- or pK interaction. In this article we present distributionsof the cross section for the pp-->ppK+K- reaction as a function of theinvariant masses of two and three particle subsystems at excess energies ofQ=10 MeV and 28 MeV.

Study of the Low Energy Dynamics in the ppK+K- System with the Cosy-11 Magnetic Spectrometer