Connection between unitary and quark description of weak radiative hyperon decays

Weak radiative hyperon decays are considered in the unitary and quark models. The problem of transition from one model to the other one is solved both for parity-violating and parity-conserving amplitudes. This eliminates the contradiction of incompatibility of these descriptions, which has been discussed for more than 20 years. The model is phenomenological and describes the experimental data well; it gives predictions for asymmetry of$\Lambda\to n+\gamma$ and $\Xi^{-}\to\Sigma^{-}+\gamma$ decays.