4.4 Article

Two-loop off-shell QCD amplitudes in FDR

期刊

JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 11, 页码 -

出版社

SPRINGER
DOI: 10.1007/JHEP11(2015)183

关键词

Renormalization Regularization and Renormalons; QCD; Scattering Amplitudes

资金

  1. European Commission through ERC-AdG [291377, PITN-GA-2012-316704]
  2. [FPA2013-47836-C3-1-P]

向作者/读者索取更多资源

We link the FDR treatment of ultraviolet (UV) divergences to dimensional regularization up to two loops in QCD. This allows us to derive the one-loop and two-loop coupling constant and quark mass shifts necessary to translate infrared finite quantities computed in FDR to the MS renormalization scheme. As a by-product of our analysis, we solve a problem analogous to the historical difficulties of the Four Dimensional Helicity (FDH) method beyond one loop. An alternative formulation of FUJI is then presented that preserves the renormalizability properties of QCD without introducing evanescent quantities.

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