International Conference on Exotic Atoms and Related Topics - EXA2017

The strength of the kaon-antikaon interaction is crucial in the discussion on the nature of the scalar resonances a0(980) and f0(980), in particular for their interpretation as a K+K- molecules. So far, one of the few possibilities to study this interaction was the kaon pair production in multi-particle exit channels, e.g. like pp->ppK+K−. In this talk we present results of the K+K− interaction studies performed based on near threshold data gathered in proton-proton collisions at the Cooler Synchrotron COSY. We discuss also feasibility study of the $K+K-$ scattering length measurements at e+e− colliders.