Effective Charge of the Higgs Boson

Abstract
The Higgs-boson line shape is studied within the pinch technique resummation formalism. It is shown that to one-loop order in perturbation theory any resonant Higgs-boson amplitude contains a universal part which is gauge independent, renormalization-group invariant, satisfies the optical and equivalence theorems, and constitutes the natural extension of the QED effective charge to the case of the Higgs scalar.
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