The standard model and the constituents of leptons and quarks
A complete set of postulates of the standard model of the electroweak interaction and mass generation is formulated and confirmed deriving the Lagrangian for the standard model. A massive fermion is formed by a right-handed and a left-handed elementary massless fermion, exchanging a scalar doublet. The elementary massless fermions forming leptons belong to an approximate SU(3) octet. The charges are quantised due to this symmetry. Pacs 12.10 Dm Standard model; Higgs mechanism; electroweak interaction The standard model of the electroweak interaction and mass generation, the model of Glashow, Weinberg and Salam [1], very successfully describes all experimental observations in particle physics made so far. The recent discovery of the Higgs particle at CERN by ATLAS and CMS is the final proof of the validity of the standard model. After the discoveries of neutrino oscillations and of the Higgs particle, the standard model deserves a detailed and consistent formulation. Describing the minimal standard model in an unconventional language, in this note it is assumed that leptons and quarks are formed by particles, which are more elementary. From their properties a set of postulates of the minimal standard model is worked out. As a proof of the postulates, the well established Lagrangian of the standard model is derived.