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We discuss the processes where a KK-graviton ($G$) of the extra-dimensionalmodels is produced in association with a color singlet boson via gluon fusionat the LHC. In particular, we consider the processes $gg \to h G$, $\gamma G$,$Z G$. These processes occur at one-loop through box and triangle diagrams. Thecross-section for the process $gg \to \gamma G$ vanishes at the one-loop level.It can be understood by introducing the charge conjugation transformations ofthe KK-graviton. The processes $gg \to h G$, $Z G$ can be observed at the LHCif the KK-graviton and the Higgs boson exist with appropriate properties.

Production of a KK-graviton in association with a boson via gluon fusion at the LHC