Mediation of Supersymmetry Breaking via Anti-Generation Fields
  In the context of the weakly coupled heterotic string, we propose a new model of mediating 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. 
M.Ito (Nagoya Univ) and T.Matsuoka (Koggakan Univ)