Vector bileptons and the decays $h\rightarrow γγ,Zγ$

Abstract

Takeing into account of the constraints on the relevant parameters from the muon anomalous magnetic moment, we consider the contributions of the vector bileptons $V^{\pm}$ and $U^{\pm\pm}$ predicted by the reduced minimal 331 model to the Higgs decay channels $h \rightarrow γγ$ and $Zγ$. Our numerical results show that the vector bileptons can enhance the partial width $Γ(h\rightarrow γγ)$, while reduce the partial width $Γ(h\rightarrow Zγ)$, which are anti-correlated. With reasonable values of the relevant free parameters, the vector bileptons can explain the $LHC$ data for the $γγ$ signal. If the $CMS$ data persists, the value of the free parameters $ λ_{2}$ and $ λ_{3}$ should be severe constrained.