Authors: Alexander Kurz Matthias Steinhauser Nikolai Zerf
Publish Date: 2012/07/23
Volume: 2012, Issue: 7, Pages: 138-
Abstract
We compute the threeloop QCD corrections to the decoupling constant for α s which relates the Minimal Supersymmetric Standard Model to Quantum Chromodynamics with five or six active flavours The new results can be used to study the stability of α s evaluated at a high scale from the knowledge of its value at M Z We furthermore derive a lowenergy theorem which allows the calculation of the coefficient function of the effective Higgs bosongluon operator from the decoupling constant This constitutes the first independent check of the matching coefficient to three loops
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