On the universality of the a priori mixing angles in weak radiative   decays of hyperons
  Strong-flavor and parity a priori mixing in hadrons are shown to describe well the experimental evidence on weak radiative decays of hyperons. An independent determination of the a priori mixing angles is performed. The values obtained for them are seen to have a universality-like property, when compared to their values in non-leptonic decays of hyperons. 
A. Garcia, R. Huerta, and G. Sanchez-Colon