Unitary symmetry and the weak currents

We discuss the structure of the weak currents in the light of unitary symmetry. We list the known leptonic interaction modes of the hadrons and show that they imply the inclusion of more currents than the ones derived from gauge invariance. Several tests of the proposed symmetry are discussed. A short theoretical study shows that renormalization effects should be felt in the limit of unitary symmetry, but can be avoided if higher groups than SU₃ are taken into account.