Infrared singularities in multi-leg scattering amplitudes

Research output: Contribution to journalArticle

Abstract / Description of output

I discuss the state-of-the-art knowledge of long-distance singularities in multi-leg gauge-theory scattering amplitudes and report on an on-going calculation of the three-loop soft anomalous dimension through the renormalization of correlators of semi-infinite Wilson lines. I also discuss the non-Abelian exponentiation theorem that has been recently generalised to multiple Wilson lines and demonstrate its application in computing the soft anomalous dimension. Finally, I present recent results for multiple-gluon-exchange webs and discuss their analytic structure.
Original languageEnglish
Pages (from-to)1-16
Number of pages16
JournalProceedings of Science
Issue number069
Publication statusPublished - 19 Jul 2014
EventLL2014 - Weimar, Germany
Duration: 27 Apr 20142 May 2014

Keywords / Materials (for Non-textual outputs)

  • hep-ph
  • hep-th


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