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PHYSICAL REVIEW D 93, 115003 (2016)

ISSN: 2470-0010, SCI

Kinetic mixing effect in the 3-3-1-1 model

P. V. Dong and D. T. Si

We show that the mixing effect of the neutral gauge bosons in the 3-3-1-1 model comes from two sources. The first one is due to the 3-3-1-1 gauge symmetry breaking as usual, whereas the second one results from the kinetic mixing between the gauge bosons of U(1)X and U(1)N groups, which are used to determine the electric charge and baryon minus lepton numbers, respectively. Such mixings modify the ρ-parameter and the known couplings of Z with fermions. The constraints that arise from flavor-changing neutral currents due to the gauge boson mixings and nonuniversal fermion generations are also given.

DOI: 10.1103/PhysRevD.93.115003