%0 Generic %A Olmedilla Moreno, Eugenio %T Geometry and physics of the fermions. 2. (Interactions). Towards a boson structure %D 2024 %U https://hdl.handle.net/20.500.14352/108733 %X We have developed a general formalism for defining distinct creation and annihilation operators for each one of the leptons and of the quarks (up to the families) in the previous PART 1. The physical magnitudes: the electric charge, the spin (an scalar, up and down), the spin (a spin) and the chirality are intrinsic to them. We defined the electric charges and the vectors-spin in terms of specific values of a discrete angle parameter and also of a set of discrete values of the time and the space. In this way, we established the elementary fermions as geometrical structures of a local time and space. Arguments of symmetry are beneath this construction. We devote this PART 2 (interactions) to the study of several of their mutual interactions and decays, from the geometrical point of view. We view the adjustments of the geometries as a starting point for the definitions of the bosons. The method is essentially algebraic, still with some deficiencies that require more research. %~