Precision calculation of the axion-nucleon coupling in chiral perturbation theory. (arXiv:2001.05327v1 [hep-ph])

Precision calculation of the axion-nucleon coupling in chiral perturbation theory. (arXiv:2001.05327v1 [hep-ph])
<a href="http://arxiv.org/find/hep-ph/1/au:+Vonk_T/0/1/0/all/0/1">Thomas Vonk</a>, <a href="http://arxiv.org/find/hep-ph/1/au:+Guo_F/0/1/0/all/0/1">Feng-Kun Guo</a>, <a href="http://arxiv.org/find/hep-ph/1/au:+Meissner_U/0/1/0/all/0/1">Ulf-G. Mei&#xdf;ner</a>

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.

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.

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