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

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 $h\to \gamma \gamma$ and $Z\gamma$. Our numerical results show that the vector bileptons can enhance the partial width $\Gamma (h\to \gamma \gamma )$, while reduce the partial width $\Gamma (h\to Z\gamma )$, 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.

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