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We find new mechanism of superconductivity beyond the spin-fluctuationtheory, the standard model for unconventional superconductivity in the weakcoupling approach, where Kondo fluctuations result in multi-gapsuperconductivity around an antiferromagnetic quantum critical point of theslave-fermion theory. Fingerprints of the hybridization mechanism are two kindsof resonance modes in not only spin but also charge fluctuations, originatingfrom $d-wave$ pairing of conduction electrons and spinless holons,respectively, thus differentiated from the spin-fluctuation mechanism. We showthat the ratio between each superconducting gap for conduction electrons$\Delta_{c}$ and holons $\Delta_{f}$ and the transition temperature $T_{c}$ is$2\Delta_{c} / T_{c} \sim 9$ and $2\Delta_{f} / T_{c} \sim\mathcal{O}(10^{-1})$, remarkably consistent with $CeCoIn_{5}$.

Superconductivity from a non-Fermi liquid metal : Kondo fluctuation mechanism in the slave-fermion theory