A theoretical determination of the eta-eta' mixing
High Energy Physics - Phenomenology
2010-01-15 v2
Abstract
The systematic large N_c limit within chiral perturbation provides an optimal eta-eta' mixing angle of about -27 degrees at leading order in p^2. In this frame, agreement with the data can be reached with higher order corrections of about 20%.
Cite
@article{arxiv.0901.2860,
title = {A theoretical determination of the eta-eta' mixing},
author = {C. Degrande and J. -M. Gerard},
journal= {arXiv preprint arXiv:0901.2860},
year = {2010}
}
Comments
12 pages, 2 figures; reference to the two-mixing-angle scheme added, minor corrections; to appear in JHEP