Soft Supersymmetry Breaking Masses and $\mu$ Parameter from Dynamical   Rearrangement of Exotic U(1) Symmetries
  We propose a mechanism that the soft supersymmetry breaking masses and $\mu$ parameter can be induced from the dynamical rearrangement of local U(1) symmetries in a five-dimensional model. It offers to a solution of $\mu$ problem if there is a large hierarchy among the relevant U(1) charge of Higgsinos and that of hidden fields which stabilize the extra-dimensional component of U(1) gauge boson. 
Yoshiharu Kawamura and Takashi Miura
hep-ph