Supergravity corrections to the static quantities of the gauge supermultiplet

In the context of an unbroken N = 1 locally supersymmetric version of the standard model we compute, at the lowest order in the gravitational coupling constant, the contribution of the graviton and the (massless) gravitino to the electromagnetic moments of the spin-1 charged gauge boson and its spin-1/2 superpartner. All these corrections are shown to be finite although regularization dependent. We verify the expected equality between the anomalous magnetic moments of the gauge boson and the corresponding gaugino. For the electric quadrupole moment of the gauge boson we do not find the expected vanishing result. (orig.)