Johan Bijnens
Professor, Deputy Head of Division
Pion and kaon electromagnetic form factors
Author
Summary, in English
We study the electromagnetic form factor of the pion and kaons at low-energies with the use of Chiral Perturbation Theory. The analysis is performed within the three flavour framework and at next-to-next-to-leading order. We explain carefully all the relevant consistency checks on the expressions, present full analytical results for the pion form factor and describe all the assumptions in the analysis. From the phenomenological point of view we make use of our expression and the available data to obtain the charge radius of the pion obtaining [r(2)](V)(pi) = (0.452 +/- 0.013)fm(2), as well as the low-energy constant L-9(r) (m(rho)) = (5.93 +/- 0.43) x 10(3). We also obtain experimental values for 3 combinations of O(p(6)) constants.
Department/s
- Theoretical Particle Physics - Has been reorganised
Publishing year
2002
Language
English
Publication/Series
Journal of High Energy Physics
Issue
3
Document type
Journal article
Publisher
Springer
Topic
- Subatomic Physics
Keywords
- electromagnetic processes and
- properties
- chiral lagrangians
- spontaneous symmetry breaking
Status
Published
ISBN/ISSN/Other
- ISSN: 1029-8479