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

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

2001-05-04

arxiv.org/abs/hep-ph/0105038v1

Phys.Lett. B518 (2001) 188-194

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 latex pages

Scientific paper

10.1016/S0370-2693(01)01006-1

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 $\bar{\psi} \sigma^{\mu\nu} \psi$ is
deduced at four loops in the MSbar scheme up to one unknown parameter.

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