Eta-eta' masses and mixing: a large N_c reappraisal

Details Eta-eta' masses and mixing: a large N_c reappraisal Eta-eta' masses and mixing: a large N_c reappraisal

2004-11-22

arxiv.org/abs/hep-ph/0411292v2

Phys.Lett. B616 (2005) 85-92

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, 1 figure. Version 2: three new equations added, reference updated

Scientific paper

10.1016/j.physletb.2005.04.057

We reconcile the 1/N_c expansion with the observed eta-eta' mass spectrum.
The chiral corrections introduced for that purpose are natural and consistent
with the octet-singlet mixing angle theta=-(22\pm 1)^{\circ} extracted from
phenomenology in the large N_c limit.

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