Soft Supersymmetry Breaking at Heavy Chiral Threshold
  We discuss the structure of threshold corrections to soft supersymmetry-breaking parameters at the mass threshold of heavy chiral superfields. Nontrivial dependence on soft parameters of heavy matter fields originates from the `physical' definition of the threshold scale, at which the general form of soft supersymmetry breaking is derived in the superfield coupling formalism. 
Hiroyuki Matsuura, Hiroaki Nakano, Koichi Yoshioka