Investigation ofπ−p→K10K10nat 4 and 5 GeV/c

Abstract
The reaction πpK10K10n has been investigated at 4 and 5 GeV/c in a spark-chamber experiment. The threshold enhancement in the s-wave K10K10 system is observed and can be fitted either by a complex scattering length or by a resonance form. An enhancement is also evident in the region of the f0 and A20 mesons, but no unambiguous interpretation of this effect can be given.