Realistic Cosmological Constant
  Scenarios of supersymmetry breaking at various scales from TeV to GUT to the string are generated. A previous analysis generated the value of the experimentally measured cosmological constant from supersymmetry breaking at the TeV scale. Via a reorganization of the perturbative series, values of the cosmological constant are generically reconcilable with supersymmetry breaking scenarios having scales from the TeV on up to the string. The scenario with only a single supersymmetry breaking scale occurs at the GUT scale, generically. 
Gordon Chalmers