The axion-baryon coupling in SU(3) heavy baryon chiral perturbation theory

Autor:	Vonk, Thomas, Guo, Feng-Kun, Meißner, Ulf-G.
Rok vydání:	2021
Předmět:	High Energy Physics - Phenomenology High Energy Physics - Lattice High Energy Physics - Theory Nuclear Theory
Zdroj:	JHEP 08 (2021) 024
Druh dokumentu:	Working Paper
DOI:	10.1007/JHEP08(2021)024
Popis:	In the past, the axion-nucleon coupling has been calculated in the framework of SU(2) heavy baryon chiral perturbation theory up to third order in the chiral power counting. Here, we extend these earlier studies to the case of heavy baryon chiral perturbation theory with SU(3) flavor symmetry and derive the axion coupling to the full SU(3) baryon octet, showing that the axion also significantly couples to hyperons. As studies on dense nuclear matter suggest the possible existence of hyperons in stellar objects such as neutron stars, our results should have phenomenological implications related to the so-called axion window. Comment: 45 pages, 1 figure
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2104.10413 Zobrazit plný text záznamu View this record from Arxiv