Johan Bijnens
Professor, Deputy Head of Division
Connected, disconnected and strange quark contributions to HVP
Author
Summary, in English
We calculate all neutral vector two-point functions in Chiral Perturbation Theory (ChPT) to two-loop order and use these to estimate the ratio of disconnected to connected contributions as well as contributions involving the strange quark. We extend the ratio of −1/10 derived earlier in two flavour ChPT at one-loop order to a large part of the higher order contributions and discuss corrections to it. Our final estimate of the ratio disconnected to connected is negative and a few % in magnitude.
Department/s
- Theoretical Particle Physics - Has been reorganised
Publishing year
2016-11-01
Language
English
Publication/Series
Journal of High Energy Physics
Volume
2016
Issue
11
Document type
Journal article
Publisher
Springer
Topic
- Subatomic Physics
Keywords
- Chiral Lagrangians
- Lattice QCD
- Precision QED
Status
Published
ISBN/ISSN/Other
- ISSN: 1029-8479