Experimental study of the (K+,K0) interactions on 7Li close to threshold

The inelastic charge exchange reaction (K+, K0) on 7Li has been experimentally investigated close to threshold with the FINUDA spectrometer at the e+e− collider DAΦNE by searching for KS0 decays. It is the first time that this process has been studied at such low momentum. An upper limit of 2.0 mb (at 95% confidence level) has been measured for the total cross section.