Johan Bijnens
Professor, Deputy Head of Division
Chiral perturbation theory for η→π0γγ
Author
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