Generalized Gordon Identities, Hara Theorem and Weak Radiative Hyperon   Decays
  It is shown that an alternative form of the parity-nonconserving (PNC) transition electromagnetic current resolves partly a puzzle with the Hara theorem. New formulation of it has allowed PNC weak radiative hyperon transitions of the charged hyperons $\Sigma^{+} \Rightarrow p + \gamma $ and $\Xi^{-} \Rightarrow \Sigma^{-} + \gamma $ revealing hitherto unseen transition toroid dipole moment. 
E.N. Bukina, V.M. Dubovik and V.S. Zamiralov