Infrared singularities of QCD scattering amplitudes in the Regge limit to all orders

Simon Caron-Huot, Einan Gardi, Joscha Reichel, Leonardo Vernazza

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

Scattering amplitudes of partons in QCD contain infrared divergences which can be resummed to all orders in terms of an anomalous dimension. Independently, in the limit of high-energy forward scattering, large logarithms of the energy can be resummed using Balitsky-Fadin-Kuraev-Lipatov theory. We use the latter to analyze the infrared-singular part of amplitudes to all orders in perturbation theory and to next-to-leading-logarithm accuracy in the high-energy limit, resumming the two-Reggeon contribution. Remarkably, we find a closed form for the infrared-singular part, predicting the Regge limit of the soft anomalous dimension to any loop order.
Original languageEnglish
Article number98
Pages (from-to)1-34
Number of pages34
Journal Journal of High Energy Physics
VolumeN/A
Early online date16 Mar 2018
DOIs
Publication statusE-pub ahead of print - 16 Mar 2018

Keywords / Materials (for Non-textual outputs)

  • hep-ph
  • hep-th

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