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Face of Malin Sjödahl. Photo.

Malin Sjödahl

Docent, researcher

Face of Malin Sjödahl. Photo.

Decomposing color structure into multiplet bases

Author

  • Malin Sjödahl
  • Johan Thorén

Summary, in English

We illustrate how QCD color structure elegantly can be decomposed into orthogonal multiplet bases corresponding to irreducible representations of SU(N-c) with the aid of Wigner 3j and 6j coefficients. We also show how to calculate the relevant 3j and 6j coefficients using multiplet bases and birdtrack techniques and argue that only a relatively small number of Wigner 3j and 6j coefficients are required. For up to six gluons plus quark-antiquark pairs we explicitly calculate all 6j coefficients required for up to NLO calculations.

Department/s

  • Theoretical Particle Physics

Publishing year

2015

Language

English

Publication/Series

Journal of High Energy Physics

Issue

9

Document type

Journal article

Publisher

Springer

Topic

  • Subatomic Physics

Keywords

  • QCD Phenomenology

Status

Published

ISBN/ISSN/Other

  • ISSN: 1029-8479