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arXiv · 1612.04389

Four-loop photon quark form factor and cusp anomalous dimension in the large-$N_c$ limit of QCD

Johannes Henn·Roman N. Lee·Alexander V. Smirnov·Vladimir A. Smirnov·Matthias Steinhauser
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Abstract

We compute the four-loop QCD corrections to the massless quark-anti-quark-photon form factor $F_q$ in the large-$N_c$ limit. From the pole part we extract analytic expressions for the corresponding cusp and collinear anomalous dimensions.

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Johannes Henn, Roman N. Lee, Alexander V. Smirnov, Vladimir A. Smirnov, Matthias Steinhauser. 2016-12-24. Four-loop photon quark form factor and cusp anomalous dimension in the large-$N_c$ limit of QCD. https://doi.org/10.1007/jhep03(2017)139

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