News Academy of Engineering Sciences A.M. Prokhorov Annotation << Back The beta-decay in the local symplectic symmetry of elementary particles G.B. Popkov In the symplectic symmetry Sp(16) introduced earlier as a symmetry group of the classical Hamiltonian equations of two interacting material points, a subgroup is defined not mixing particles with antiparticles and not changing the spin, which is offered as a gauge group. Physical interpretation of the gauge group operators is given and the mechanism of symmetry breakdown, consisting in equalization of the quark color charge by the gluon or other quarks color charge which leads to the occurrence of atomiclike structures describing flavour quarks and leptons, is offered. These structures’ via orbital moment excitation generates families of particles, and shortrange interaction between strong and weak interactions is explained by screening of the colour charge – similar to how the screening of the atomic nuclear charge by electrons transforms long-range electromagnetic interaction into the shortrange chemical one. For verification within the framework of this scheme the relation of constants of axial and vector current in the beta-decay was calculated, which gave excellent agreement with experimental results. Keywords: symplectic symmetry, gauge group, symmetry breakdown, lepton structure, beta-decay. Contacts: E-mail: igorpopkoff@Yandex.ru Pp. 14-18.