  We show that simultaneous gauge and supersymmetry breaking can be induced by
radiative corrections, a la Coleman-Weinberg. When a certain correlation among
the superpotential parameters is present, a local supersymmetry-breaking
minimum is found in the effective potential of a gauge non-singlet field, in a
region where the tree-level potential is almost flat. Supersymmetry breaking is
then transmitted to the MSSM through gauge and chiral messenger loops, thus
avoiding the suppression of gaugino masses characteristic of direct gauge
mediation models. The use of a single field ensures that no dangerous tachyonic
scalar masses are generated at the one-loop level. We illustrate this mechanism
with an explicit example based on an SU(5) model with a single adjoint. An
interesting feature of the scenario is that the GUT scale is increased with
respect to standard unification, thus allowing for a larger colour Higgs
triplet mass, as preferred by the experimental lower bound on the proton
lifetime.
