Limiting Case of Modified Electroweak Model for Contracted Gauge Group

The modification of the Electroweak Model with 3-dimensional spherical geometry in the matter fields space is suggested. The Lagrangian of this model is given by the sum of the free (without any potential term) matter fields Lagrangian and the standard gauge fields Lagrangian. The vector boson masses are generated by transformation of this Lagrangian from Cartesian coordinates to coordinates on the sphere S3. The limiting case of the bosonic part of the modified model, which corresponds to the contracted gauge group SU(2; j)× U(1) is discussed. Within framework of the limit model Z boson and electromagnetic fields can be regarded as external ones with respect toW-boson fields in the sence that W-boson fields do not effect on these external fields. The masses of all particles of the ElectroweakModel remain the same, but field interactions in contracted model are more simple as compared with the standard ElectroweakModel.