Vector bileptons and the decays $h\rightarrow \gamma\gamma,Z\gamma$

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 $h \rightarrow \gamma \gamma$ and $Z\gamma$. Our numerical results show that the vector bileptons can enhance the partial width $\Gamma(h\rightarrow \gamma\gamma)$, while reduce the partial width $\Gamma(h\rightarrow Z\gamma)$, which are anti-correlated. With reasonable values of the relevant free parameters, the vector bileptons can explain the $LHC$ data for the $\gamma\gamma$ signal. If the $CMS$ data persists, the value of the free parameters $ \lambda_{2}$ and $ \lambda_{3}$ should be severe constrained.