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

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

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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Veröffentlicht in:The journal of high energy physics 2017-03, Vol.2017 (3), p.1-13, Article 139
Hauptverfasser: Henn, Johannes, Lee, Roman N., Smirnov, Alexander V., Smirnov, Vladimir A., Steinhauser, Matthias
Format: Artikel
Sprache:eng
Schlagworte:
Perturbative QCD
Scattering Amplitudes
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Zusammenfassung: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.
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP03(2017)139