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The cross sections for the pp→ppK+K− reaction were measured at three beam energies 2.65, 2.70, and 2.83 GeV at the COSY-ANKE facility. The shape of the K+K− spectrum at low invariant masses largely reflects the importance of KK¯ final state interactions. It is shown that these data can be understood in terms of an elastic K+K− rescattering plus a contribution coming from the production of a K0K¯0...
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