Relating the ElectroWeak scale to an extra dimension: constraints from   ElectroWeak Precision Tests
  In models with supersymmetry breaking by boundary conditions on an extra dimension it is possible to relate in a quantitative natural way the Fermi scale to the size of the extra dimension. We analyze in detail the compatibility of such models with ElectroWeak Precision Tests. 
Guido Marandella, Michele Papucci