  In this work we study a scenario with a warped 5D smooth braneworld with 4D
Minkowski geometry builded from bulk scalar matter non-minimally coupled to
gravity with an additional Gauss-Bonnet term. We present exact solutions for
the full braneworld configuration in contrast to previous results where only
approximate solutions were constructed due to the highly non-linear character
of the relevant differential equations. These solutions allow us to study the
necessary conditions for the finiteness of the 4D Planck mass and additionally,
enables us to perform a more rigorous analysis of 4D gravity localization
compared to approximate approaches. It is remarkable that all the constructed
braneworld configurations lead to standard 4D gravity localization since they
contain a localized massless tensor mode (the graviton). We also analyze the
localization properties of scalar, vector and tensor fluctuation modes for the
constructed field configurations. We show that for the considered backgrounds,
only the massless tensor mode, i.e. the 4D graviton, is localized on the brane,
while the vector and scalar modes are not confined to the brane.
