Mediation of Supersymmetry Breaking via Anti-Generation Fields

In the context of the weakly-coupled heterotic string, we propose a new model of me-diating supersymmetry breaking.The breakdown of supersymmetry in the hidden sector is transmitted to anti-generation fields via gravitational interactions.Subsequent transmission of the breaking to the MSSM sector occurs via gauge interactions.It is shown that the mass spectra of superparticles are phenomenologically viable.