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Photo of Johan Bijnens

Johan Bijnens

Professor

Photo of Johan Bijnens

Leading logarithms in the anomalous sector of two-flavour QCD

Author

  • Johan Bijnens
  • Karol Kampf
  • Stefan Lanz

Summary, in English

We add the Wess-Zumino-Witten term to the N = 3 massive nonlinear sigma model and study the leading logarithms in the anomalous sector. We obtain the leading logarithms to six loops for pi(0) -> gamma*gamma* and to five loops for y*pi pi pi. In addition we extend the earlier work on the mass and decay constant to six loops and the vector form factor to five loops. We present numerical results for the anomalous processes and the vector form factor. In all cases the series are found to converge rapidly. (C) 2012 Elsevier B.V. All rights reserved.

Department/s

  • Theoretical Particle Physics

Publishing year

2012

Language

English

Pages

245-266

Publication/Series

Nuclear Physics, Section B

Volume

860

Issue

2

Document type

Journal article

Publisher

North-Holland

Topic

  • Subatomic Physics

Keywords

  • Renormalization group evolution of parameters
  • Spontaneous and radiative
  • symmetry breaking
  • Chiral Lagrangians
  • Anomalous processes

Status

Published

ISBN/ISSN/Other

  • ISSN: 0550-3213