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Photo of Johan Bijnens

Johan Bijnens

Professor

Photo of Johan Bijnens

Chiral perturbation theory for η→π0γγ

Author

  • Ll Ametller
  • J. Bijnens
  • A. Bramon
  • F. Cornet

Summary, in English

The η→π0γγ decay amplitude is discussed in the general context of chiral perturbation theory assuming that the low-energy constants (counterterms) are saturated by the known meson resonances. The suppression of the lowest order contributions is understood in physical terms. A reasonable agreement with the experimental decay width is achieved.

Publishing year

1992-02-06

Language

English

Pages

185-190

Publication/Series

Physics Letters B

Volume

276

Issue

1-2

Document type

Journal article

Publisher

Elsevier

Topic

  • Subatomic Physics

Status

Published

ISBN/ISSN/Other

  • ISSN: 0370-2693