  We study a screening mechanism in the context of scalar-vector-tensor (SVT)
theories. This screening mechanism is based on both the derivative
self-interactions of the vector field and the interactions of the scalar field
with the vector field and curvature. We calculate the field equations in a
spherically symmetric space-time, and then, we study the conditions for which
this mechanism is successful in a weak gravitational background. In order to
corroborate these analytical results, we have performed a numerical integration
of the full equations. Finally, the corrections to the gravitational potentials
have also been computed. We conclude that the present model, including both
kinds of interactions, can avoid the propagation of the additional longitudinal
mode arising in these theories. We also show that the space parameter of the
model is compatible with solar system constraints. This result extends the
previous one found in the literature for generalized Proca theories to the case
of SVT theories in the presence of scalar-vector interactions.
