A Suggested Experiment to Determine the Spin of and the Parities of Λ — Σ, and

In this note we propose an experiment to observe the final state Λ − π resonance and the cusp arising from the near threshold effect of the Σ-production, and from this to determine the spin of and the relative parities of Λ − Σ, and , and . The centre of mass energy of the initial π − P system should be around 1900 MeV (this correspond. to 1305 MeV of the incident pion in the laboratory system). Choose the events in which the energy of the kaon lies below 90 MeV and observe the correlation between resonance and the cusp…