arXiv:2001.05327·v1·High Energy Physics — Phenomenology
Precision calculation of the axion-nucleon coupling in chiral perturbation theory
Thomas Vonk🇩🇪 · Feng-Kun Guo🇨🇳 · Ulf-G. Meißner🇨🇳
Abstract
We derive the axion-nucleon interaction Lagrangian in heavy baryon chiral perturbation theory up to next-to-next-to-leading order. The effective axion-nucleon coupling is calculated to a few percent accuracy.
Comments: 20 pages