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arXiv · 1801.08292

Four-loop wave function renormalization in QCD and QED

Peter Marquard·Alexander V. Smirnov·Vladimir A. Smirnov·Matthias Steinhauser
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Abstract

We compute the on-shell wave function renormalization constant to four-loop order in QCD and present numerical results for all coefficients of the SU$(N_c)$ colour factors. We extract the four-loop HQET anomalous dimension of the heavy quark field and also discuss the application of our result to QED.

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Peter Marquard, Alexander V. Smirnov, Vladimir A. Smirnov, Matthias Steinhauser. 2018-01-25. Four-loop wave function renormalization in QCD and QED. https://doi.org/10.1103/physrevd.97.054032

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