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Johan Bijnens in front of his whiteboard

Johan Bijnens

Professor, Deputy Head of Division

Johan Bijnens in front of his whiteboard

The anomalous Lagrangian in ChPT at NNLO

Author

  • Johan Bijnens
  • Nils Hermansson-Truedsson
  • Joan Ruiz-Vidal

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