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Anomalous dimension of non-singlet quark currents at O(1/Nf^2) in QCD

D. B. Ali·J. A. Gracey
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Abstract

We compute the O(1/Nf^2) corrections to the flavour non-singlet quark bilinear currents in QCD in arbitrary spacetime dimensions. Hence, the anomalous dimension of the QED current $\barψ σ^{μν} ψ$ is deduced at four loops in the MSbar scheme up to one unknown parameter.

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D. B. Ali, J. A. Gracey. 2001-05-04. Anomalous dimension of non-singlet quark currents at O(1/Nf^2) in QCD. https://doi.org/10.1016/s0370-2693(01)01006-1

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