Johan Bijnens
Professor, Deputy Head of Division
Pi pi scattering in three flavor ChPT : ππ scattering in three flavour ChPT
Author
Summary, in English
We present the scattering lengths for the pi-pi processes in the three flavour Chiral Perturbation Theory (ChPT) framework at next-to-next-to-leading order. We then combine this calculation with the determination of the parameters from $Ke4 and the masses and decay constants and compare with the results of a dispersive analysis of pi-pi scattering. The comparison indicates a small but nonzero value for the 1/Nc suppressed NLO low energy constants L4r and L6r.
Department/s
- Department of Astronomy and Theoretical Physics - Has been reorganised
Publishing year
2004
Language
English
Publication/Series
Journal of High Energy Physics
Volume
05
Issue
JHEP01(2004)
Document type
Journal article
Publisher
Springer
Topic
- Subatomic Physics
Keywords
- Chiral Lagrangians
- Spontaneous Symmetry Breaking
Status
Published
ISBN/ISSN/Other
- ISSN: 1029-8479