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Strong renormalization scheme dependence in τ-lepton decay: Fact or fiction?
Phys. Rev. D 51, 5331 – Published 1 May, 1995
DOI: https://doi.org/10.1103/PhysRevD.51.5331
Abstract
The question of the renormalization scheme dependence of the τ semileptonic decay rate is examined in response to a recent criticism. Particular attention is payed to a distinction between a consistent quantitative description of this dependence and the actual selection of a subset of ‘‘acceptable’’ renormalization schemes. It is pointed out that this criticism is valid only within a particular definition of the ‘‘strength’’ of the renormalization scheme dependence and should not discourage further attempts to use the semileptonic τ decay rate for quantitative tests of perturbative QCD.
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