Couplings of the eta and eta' Mesons to the Nucleon

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The couplings of the eta and eta' mesons to the nucleon are obtained from the U_A(1) Goldberger-Treiman relation. The chiral symmetry breaking corrections are very large and bring the calculated values of the coupling constants G_etaNN and G_eta'NN close to values obtained from potential models.
Version 3. The old version went by mistake Version to appear in Phys. Lett. B

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High Energy Physics - Phenomenology

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http://salesiana.dossiersoluciones.com/handle/123456789/177938

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/hep-ph/0512048
 http://arxiv.org/abs/hep-ph/0512048
 Phys.Lett.B645:335-338,2007
 doi:10.1016/j.physletb.2006.12.048

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