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Stefan Prestel. Photo.

Stefan Prestel

Associate senior lecturer

Stefan Prestel. Photo.

Implementing NLO DGLAP evolution in parton showers

Author

  • Stefan Höche
  • Frank Krauss
  • Stefan Prestel

Summary, in English

We present a parton shower which implements the DGLAP evolution of parton densities and fragmentation functions at next-to-leading order precision up to effects stemming from local four-momentum conservation. The Monte-Carlo simulation is based on including next-to-leading order collinear splitting functions in an existing parton shower and combining their soft enhanced contributions with the corresponding terms at leading order. Soft double counting is avoided by matching to the soft eikonal. Example results from two independent realizations of the algorithm, implemented in the two event generation frameworks Pythia and Sherpa, illustrate the improved precision of the new formalism.

Publishing year

2017-10-13

Language

English

Publication/Series

Journal of High Energy Physics

Volume

2017

Issue

10

Document type

Journal article

Publisher

Springer

Topic

  • Subatomic Physics

Keywords

  • Jets
  • QCD Phenomenology

Status

Published

ISBN/ISSN/Other

  • ISSN: 1029-8479