  In this work, we investigate the effects of the ghost sector on the dynamical
mass generation for the gauge boson of a pure Yang-Mills theory. The generation
of a dynamical mass for the gluon is realized by the Schwinger mechanism, which
is triggered by the existence of longitudinally coupled massless poles in the
fundamental vertices of the theory. The appearance of such poles occurs by
purely dynamical reasons and is governed by a set of Bethe-Salpeter equations.
In previous studies, only the presence of massless poles in the
background-gauge three-gluon vertex was considered. Here, we include the
possibility for such poles to appear also in the corresponding ghost-gluon
vertex. Then, we solve the resulting Bethe-Salpeter system, which reveals that
the contribution associated with the poles of the ghost-gluon vertex is
suppressed with respect to those originating from the three-gluon vertex.
