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Image showing Leif

Leif Gellersen

Postdoc

Image showing Leif

Coloring mixed QCD/QED evolution

Author

  • Leif Gellersen
  • Stefan Prestel
  • Michael Spannowsky

Summary, in English

Parton showers are crucial components of high-energy physics calculations. Improving their modelling of QCD is an active research area since shower approximations are stumbling blocks for precision event generators. Naively, the interference between subdominant Standard-Model interactions and QCD can be of similar size to subleading QCD corrections. This article assesses the impact of QCD/QED interference effects in parton showers, by developing a sophisticated shower including QED, QCD at fixed color, and employing complete tree-level matrix element corrections for individual NC = 3 color configurations to embed interference. The resulting simulation indicates that QCD/QED interference effects are small for a simple test case and dwarfed by electro-weak resonance effects.

Department/s

  • Theoretical Particle Physics - Has been reorganised

Publishing year

2022-08

Language

English

Publication/Series

SciPost Physics

Volume

13

Issue

2

Document type

Journal article

Publisher

SciPost

Topic

  • Physical Sciences

Status

Published

ISBN/ISSN/Other

  • ISSN: 2542-4653