  We analyze here the mass spectrum of light vector and scalar mesons applying
a novel approach where a modified soft wall model that includes a UV-cutoff at
a finite $z$-position in the AdS space is used, thus introducing an extra
energy scale. For this model, we found that the masses for the scalar and
vector spectra are well fitted within $\delta_{RMS}=7.64\%$ for these states,
with non-linear trajectories given by two common parameters, the UV locus
$z_{0}$ and the quadratic dilaton profile slope $\kappa$. We also conclude that
in this model, the $f_{0}(500)$ scalar resonance cannot be fitted
holographycally as a $q\overline{q}$ state since we cannot find a trajectory
that include this pole. This result is in agreement with the most recent
phenomenological and theoretical methods.
