The $(K^{−}\pi^{−})$ reaction at CERN

In the strangeness‐exchange reaction (K−π−) on different targets the most prominent transitions to hypernuclear states produced in recoilless and quasi‐free Λ production have been identified. The analysis of the spectra shows that the behaviour of the Λ is well described in an independent particle model. The Λ‐nucleus spin orbit coupling is found to be about one order of magnitude smaller than for the nucleon‐nucleus interaction.