Johan Bijnens
Professor, Deputy Head of Division
Three-flavor partially quenched chiral perturbation theory at NNLO for meson masses and decay constants
Author
Summary, in English
We discuss partially quenched chiral perturbation theory (PQ chi PT) and possible fitting strategies to lattice QCD data at next-to-next-to-leading order (NNLO) in the mesonic sector. We also present a complete calculation of the masses of the charged pseudoscalar mesons, in the supersymmetric formulation of PQ chi PT. Explicit analytical results are given for up to three nondegenerate sea-quark flavors, along with the previously unpublished expression for the pseudoscalar meson decay constant for three nondegenerate sea-quark flavors. The numerical analysis in this paper demonstrates that the corrections at NNLO are sizable, as expected from earlier work.
Department/s
- Theoretical Particle Physics - Has been reorganised
- Mathematical Physics
Publishing year
2006
Language
English
Publication/Series
Physical Review D (Particles, Fields, Gravitation and Cosmology)
Volume
73
Issue
7: 074509
Document type
Journal article
Publisher
American Physical Society
Topic
- Subatomic Physics
- Physical Sciences
Status
Published
ISBN/ISSN/Other
- ISSN: 1550-2368