Mirror matter admixtures and isospin breaking in the \Delta I=1/2 rule   in \Omega^- two body non-leptonic decays
  We discuss a description of \Omega^- two body non-leptonic decays based on possible, albeit tiny, admixtures of mirror matter in ordinary hadrons. The \Delta I=1/2 rule enhancement is obtained as a result of isospin symmetry and, more importantly, the rather large observed deviations from this rule result from small isospin breaking. This analysis lends support to the possibility that the enhancement phenomenon observed in low energy weak interactions may be systematically described by mirror matter admixtures in ordinary hadrons. 
G. Sanchez-Colon, R. Huerta and A. Garcia