Johan Bijnens
Professor, Deputy Head of Division
The anomalous Lagrangian in ChPT at NNLO
Author
Summary, in English
The anomalous Lagrangian in mesonic Chiral Perturbation Theory, of odd intrinsic parity, is determined to next-to-next-to-leading order thereby completing the order p8 Lagrangian. A schematic view of its construction with the MINIBAR package for Mathematica is presented and the final operator count is discussed for a general number of light quark flavours as well as for the physical cases N f = 2, 3. The number of operators in our explicit construction of the Lagrangian basis is consistent with the number derived using the Hilbert series in the literature.
Department/s
- Particle and nuclear physics
Publishing year
2024-03-21
Language
English
Publication/Series
Proceedings of Science
Volume
449
Document type
Conference paper
Topic
- Subatomic Physics
Conference name
2023 European Physical Society Conference on High Energy Physics, EPS-HEP 2023
Conference date
2023-08-21 - 2023-08-25
Conference place
Hamburg, Germany
Status
Published
ISBN/ISSN/Other
- ISSN: 1824-8039