The Economical su (3) c su (3) U(1) X Gauge models
Hoang Ngoc Long, Phung Van Dong
The SU(3)C ⊗ SU(2)L ⊗ U(1)Y standard model of strong and
electroweak interactions, with the SU(2)L ⊗U(1)Y gauge symmetry
spontaneously broken down to the U(1)Q of electromagnetism, is
an excellent description of the interactions of elementary particles
down to distances in the order of 10−16cm. However, it also leaves
many striking features of the physics of our world unexplained.
Some of them are the generation number problem, electric charge
quantization and neutrino oscillations, which imply that the neutrinos are massive and the flavor lepton number is not conserved. All
this requires new interactions beyond the conventional interactions
in the standard model.