Matching relations for decoupling in the standard model at two loops and beyond

  title={Matching relations for decoupling in the standard model at two loops and beyond},
  author={Stephen P. Martin},
  journal={Physical Review D},
I discuss the matching relations for the running renormalizable parameters when the heavy particles (top quark, Higgs scalar, Z and W vector bosons) are simultaneously decoupled from the Standard Model. The complete two-loop order matching for the electromagnetic coupling and all light fermion masses are obtained, augmenting existing results at 4-loop order in pure QCD and complete two-loop order for the strong coupling. I also review the further sequential decouplings of the lighter fermions… Expand

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