MSUGRA Dark Matter and the b Quark Mass
  We extend the commonly used mSUGRA framework to allow complex soft terms. We show how these phases can induce large changes of the SUSY threshold corrections to the b quark mass and affect the neutralino relic density predictions of the model. We present some specific models with large SUSY phases which can accommodate the fermion electric dipole moment constraints and a neutralino relic density within the WMAP bounds. 
Mario E. Gomez (Huelva U.), Tarek Ibrahim (Alexandria U. &   Northeastern U.), Pran Nath (Northeastern U.), Solveig Skadhaug...