4.4 Article

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

Journal

JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 3, Pages -

Publisher

SPRINGER
DOI: 10.1007/JHEP03(2017)139

Keywords

Perturbative QCD; Scattering Amplitudes

Funding

  1. GFK
  2. PRISMA cluster of excellence at Mainz university
  3. Deutsche Forschungsgeminschaft through the project Infrared and threshold effects in QCD
  4. RFBR [17-02-00175A]

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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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