Σ0→Λ0+e++e−and theΣ0−Λ0Relative Parity

The ${\Sigma }^0-{\Lambda }^0$ relative parity may be measured by observing correlation of polarizations in the process ${\Sigma }^0\to {\Lambda }^0+\gamma$. Internal conversion of the photon into an electron pair (Dalitz pair) serves as an analyzer which selects polarized photons. Theoretical results are presented which show that the Dalitz-pair decay mode of polarized ${\Sigma }^0\text{'}\mathrm{s}$ may be used to measure the ${\Sigma }^0-{\Lambda }^0$ relative parity.