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We study the origin of the supersymmetry breaking induced by the mediation ofgravity and the radion multiplet from the hidden to the visible brane in thecontext of the N=2, D=5 supergravity compactified on S_1/Z_2 orbifolds. Thesoft supersymmetry breaking terms for scalar masses, trilinear scalar couplingsand gaugino masses are calculated to leading order in the five dimensionalNewton's constant k_5^2 and the gravitino mass m_{3/2}. These are finite andnon-vanishing, with the scalar soft masses be non-tachyonic, and are allexpressed in terms of the gravitino mass and the length scale R of the fifthdimension. The soft supersymmetry breaking parameters are thus correlated andthe phenomenological implications are discussed.

The soft supersymmetry breaking in D=5 supergravity compactified on S_1/Z_2 orbifolds