Commensurate scale relations in quantum chromodynamics
نویسندگان
چکیده
منابع مشابه
Commensurate Scale Relations: Precise Tests of Quantum Chromodynamics without Scale or Scheme Ambiguity
We derive commensurate scale relations which relate perturbatively calculable QCD observables to each other, including the annihilation ratio Re+e−, the heavy quark potential, τ decay, and radiative corrections to structure function sum rules. For each such observable one can define an effective charge, such as αR( √ s)/π ≡ Re+e−( √ s)/(3 ∑ eq) − 1. The commensurate scale relation connecting th...
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I discuss several theoretical tools which are useful for analyzing perturbative and non-perturbative problems in quantum chromodynamics, including (a) the light-cone Fock expansion, (b) the e ective charge V , (c) conformal symmetry, and (d) commensurate scale relations. Light-cone Fock-state wavefunctions encode the properties of a hadron in terms of its fundamental quark and gluon degrees of ...
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Commensurate scale relations are perturbative QCD predictions which relate observable to observable at xed relative scales, independent of the choice of intermediate renormalization scheme or other theoretical conventions. A prominent example is the generalized Crewther relation" which connects the Bjorken and Gross-Llewellyn Smith deep inelastic scattering sum rules to measurements of the e + ...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 1995
ISSN: 0556-2821
DOI: 10.1103/physrevd.51.3652