Johan Bijnens
Professor, Deputy Head of Division
Meson-meson scattering in QCD-like theories
Author
Summary, in English
We discuss meson-meson scattering at next-to-next-to-leading order in the chiral expansion for QCD-like theories with general n degenerate flavours for the cases with a complex, real and pseudo-real representation. i.e. with global symmetry and breaking pattern SU(n)(L) x SU(n)(R) -> SU(n)(V), SU(2n) -> SO(2n) and SU(2n) -> Sp(2n). We obtain fully analytical expressions for all these cases. We discuss the general structure of the amplitude and the structure of the possible intermediate channels for all three cases. We derive the expressions for the lowest partial wave scattering length in each channel and present some representative numerical results. We also show various relations between the different cases in the limit of large n.
Department/s
- Theoretical Particle Physics - Has been reorganised
Publishing year
2011
Language
English
Publication/Series
Journal of High Energy Physics
Issue
3
Document type
Journal article
Publisher
Springer
Topic
- Subatomic Physics
Keywords
- Spontaneous Symmetry Breaking
- Lattice Gauge Field Theories
- Chiral
- Lagrangians
- Technicolor and Composite Models
Status
Published
ISBN/ISSN/Other
- ISSN: 1029-8479