Momentum subtraction and the R-ratio

Abstract

We determine the R-ratio for massless quarks in several renormalization schemes to various loop orders. These are the momentum subtraction schemes of Celmaster and Gonsalves as well as the minimal momentum subtraction scheme. The dependence of the R-ratio on the schemes is analysed.

arXiv comment27 latex pages, 36 figures, anc directory contains txt file with electronic version of main equations

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Cited by in corpus (11)

• The anomalous magnetic moment of the muon in the Standard Model
• On Higgs decays to hadrons and the R-ratio at N^4LO
• Four-loop QCD propagators and vertices with one vanishing external momentum
• On the Interface between Perturbative and Nonperturbative QCD
• Fourth-order QCD renormalization group quantities in the {\rm{V}}-scheme and the relation of the $\beta$-function to the Gell-Mann--Low function in QED
• Renormalization Scheme Dependence in a QCD Cross Section
• Four-loop QCD MOM beta functions from the three-loop vertices at the symmetric point
• Gauge dependence of the perturbative QCD predictions under the momentum space subtraction scheme
• Multiple Couplings and Renormalization Scheme Ambiguities
• Maximal abelian and Curci-Ferrari gauges in momentum subtraction at three loops
• The analytical $\mathcal{O}(a_s^4)$ expression for the polarized Bjorken sum rule in the miniMOM scheme and the consequences for the generalized Crewther relation