The electroweak theory of SU(3) $\times$ U(1)

Abstract

An electroweak model of SU(3) $\times$ U(1) gauge group is studied. {}From the group theoretical constraint, the symmetry breaking of this model to the standard model occurs at 1.7~TeV or lower. Hence the mass of the new neutral gauge boson is less than 1.7 TeV. The $Y^{\pm }$ and $Y^{\pm \pm }$ masses are found to be less than half of the $Z_2$ mass. Thus, the decays $Z_2\to Y^{++}{Y}^{--}$ with $Y^{++}\to 2{\ell }^{+}(\ell =e,\mu ,\tau )$ is allowed, providing spectacular signatures at future colliders. {}From the flavor-changing neutral current processes, the representations of quarks can be uniquely determined. The neutrino-isoscalar scattering experiments are also considered.

Comments: 19 pages (3 figures are not included), TRI-PP-92-125