  We investigate the massive graviton contributions to 4D gravity in a 6D brane
world scenario, whose bulk field content can include that of 6D chiral gauged
supergravity. We consider a general class of solutions having 3-branes, 4D
Poincare symmetry and axisymmetry in the internal space. We show that these
contributions, which we compute analytically, can be independent of the brane
vacuum energy as a consequence of geometrical and topological properties of the
above-mentioned codimension two brane world. These results support the idea
that in such models the gravitational interactions may be decoupled from the
brane vacuum energy.
