Logarithmic accuracy of angular-ordered parton showers

Gavin Bewick, Silvia Ferrario Ravasio, Peter Richardson, Michael H. Seymour

Research output: Contribution to journalArticlepeer-review


We study the logarithmic accuracy of angular-ordered parton showers by considering the singular limits of multiple emission matrix elements. This allows us to consider different choices for the evolution variable and propose a new choice which has both the correct logarithmic behaviour and improved performance away from the singular regions. In particular the description of e+e event shapes in the non-logarithmic region is significantly improved.

Original languageEnglish
Article number19
JournalJournal of High Energy Physics
Issue number4
Publication statusPublished - 3 Apr 2020


  • Jets
  • QCD Phenomenology


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