Combined constraints on the SUSY parameter space from $\Delta r$ ~and   Higgs boson search
  Combining the constraints coming from the ~$M_W$ ~measurements and the unsuccesful search for the Higgs boson at LEP we determine in the framework of MSSM the allowed mass regions for the lighter scalar partner of the top quark. For a heavy top quark particularily strong bounds are obtained for low values of ~$\tan\beta\equiv v_2/v_1$ ~and light bottom squark. 
Piotr H. Chankowski