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Nils HT

Nils Hermansson-Truedsson

Affiliated

Nils HT

The anomalous chiral Lagrangian at order p 8

Author

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

Summary, in English

We derive the order p 8 Lagrangian of odd intrinsic parity for mesonic chiral perturbation theory, and provide the resulting operator basis in the supplementary material. Neglecting the non-zero singlet trace, we find 999 operators for a general number of quark flavours Nf , 705 for Nf = 3 and 92 for Nf = 2. Our numbers agree with those obtained through the Hilbert series approach in the literature. Including a singlet trace, as needed for the physical case of Nf = 2, instead yields 1210 operators for a general Nf , 892 for Nf = 3 and 211 for Nf = 2.

Department/s

  • Particle and nuclear physics

Publishing year

2024-01

Language

English

Publication/Series

Journal of High Energy Physics

Volume

2024

Issue

1

Document type

Journal article

Publisher

Springer

Topic

  • Subatomic Physics

Keywords

  • Chiral Lagrangian
  • Effective Field Theories of QCD

Status

Published

ISBN/ISSN/Other

  • ISSN: 1029-8479