Title of article :
The generalized Crewther relation in QCD and its experimental consequences
Author/Authors :
S.J. Brodsky، نويسنده , , G.T Gabadadze، نويسنده , , A.L. Kataev، نويسنده , , H.J Lu، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 1996
Pages :
8
From page :
133
To page :
140
Abstract :
We use the BLM scale-fixing prescription to derive a renormalization-scheme invariant relation between the coefficient function for the Bjorken sum rule for polarized deep inelastic scattering and the R-ratio for the e+e− annihilation cross section. This relation provides a generalization of the Crewther relation to non-conformally invariant gauge theories. The derived relations allow one to calculate unambiguously without renormalization scale or scheme ambiguity the effective charges of the polarized Bjorken and the Gross-Llewellen Smith sum rules from the experimental value for the effective charge associated with R-ratio. Present data are consistent with the generalized Crewther relations, but measurements at higher precision and energies will be needed to decisively test these fundamental relations in QCD.
Journal title :
PHYSICS LETTERS B
Serial Year :
1996
Journal title :
PHYSICS LETTERS B
Record number :
906298
Link To Document :
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