  We compute the light axial-vector and tensor meson two-photon transition form
factors in the soft-wall holographic model of QCD in the flavor-symmetric case.
They are used to evaluate the axial-vector and tensor meson contributions to
the anomalous magnetic moment of the muon via the hadronic light-by-light
scattering process. As expected, these contributions are smaller than the one
from pseudoscalar mesons. The result for axial-vector mesons is higher than the
value found in other approaches.
