Spontaneously broken supersymmetric theories of weak, electromagnetic and strong interactions

A new class of leptons, with its own quantum number carried by the supersymmetry generator, includes a Goldstone-neutrino, a photon-neutrino, gluon-neutrinos and heavy leptons. The Goldstone- and photon-neutrinos can be produced in low-energy processes, but only in pairs. Ordinary leptons and quarks are associated with heavy scalar bosons under supersymmetry. The latter decay quickly into the corresponding leptons or quarks, emitting a Goldstone or a photon-neutrino. Some of the phenomenological implications are discussed. (Auth.)