A PRIORI MIXED HADRONS, WEAK RADIATIVE AND NON-LEPTONIC DECAYS OF HYPERONS

A priori mixings of eigenstates in physical states are quantum mechanical effects well known in several realms of physics. The possibility that such effects are also present in particle physics, in the form of flavour and parity mixings, is studied. Applications to weak radiative and non-leptonic decays of hyperons are discussed.