Renormalisation-group invariance and universal soft supersymmetry-breaking

@inproceedings{Jack1995RenormalisationgroupIA,
  title={Renormalisation-group invariance and universal soft supersymmetry-breaking},
  author={Ian Jack and D. R. Timothy Jones},
  year={1995}
}
We show that a particular " universal " form for the soft-breaking couplings in a softly broken N = 1 supersymmetric gauge theory is renormalisation-group invariant through two loops, provided we impose one simple condition on the dimensionless couplings. The universal form for the trilinear couplings and mass terms is identical to that found in popular derivations of the soft-breaking terms from strings or supergravity. 

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