$\mu$ Parameter from Dynamical Rearrangement of U(1) and $\theta$   Parameter
  We study the generation of $\mu$ parameter from the dynamical rearrangement of local U(1) symmetry in a five-dimensional model and discuss phenomenological implications on the $\theta$ parameter, under the assumption that supersymmetry is broken by the Scherk-Schwarz mechanism. 
Yoshiharu Kawamura and Takashi Miura
hep-ph hep-th