Speaker
Gabriele Ferretti
Description
From 0912.0743: We give a general formulation of semi-direct
gauge mediation of supersymmetry breaking where the
messengers interact with the hidden sector only through a
weakly gauged group. Using this general formulation, we
provide an explicit proof that the MSSM gaugino masses are
vanishing to leading order in the gauge couplings. On the
other hand, the MSSM sfermion masses have, generically, a
non-vanishing leading contribution. We discuss how such a
mechanism can successfully be combined with other mediation
schemes which give tachyonic sfermions, such as sequestered
anomaly mediation and some direct gauge mediation models.
