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Journal of High Energy Physics

, 2019:102 | Cite as

The order p8 mesonic chiral Lagrangian

  • Johan Bijnens
  • Nils Hermansson-Truedsson
  • Si Wang
Open Access
Regular Article - Theoretical Physics
  • 3 Downloads

Abstract

We derive the chiral Lagrangian at next-to-next-to-next-to-leading order (NNNLO) for a general number Nf of light quark flavours as well as for Nf = 2, 3. We enumerate the contact terms separately. We also discuss the cases where some of the external fields are not included. An example of a choice of Lagrangian is given in the supplementary material.

Keywords

Chiral Lagrangians Global Symmetries Spontaneous Symmetry Breaking 

Notes

Open Access

This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.

Supplementary material

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Copyright information

© The Author(s) 2019

Authors and Affiliations

  1. 1.Department of Astronomy and Theoretical PhysicsLund UniversityLundSweden

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