Abstract
The near-threshold enhancement in the pp-barinvariant mass spectrum of the reaction J/{psi}{yields}{gamma}pp-bar, observed in an experiment by the BES Collaboration, is analysed. It is shown, within the Watson-Migdal approach to final state interactions, that the mass dependence of the pp-barspectrum close to the threshold can be reproduced by the S-wave pp-barinteraction of the Juelich NN-barmodel in the isospin I=1 state. Difficulties in the consistent interpretation of the pp-barinvariant mass spectrum of the reaction J/{psi}{yields}{pi}0pp-bar, where there are no obvious signs for a final state interaction, are discussed.
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