Study of the eta-eta' system in the two mixing angle scheme

Details Study of the eta-eta' system in the two mixing angle scheme Study of the eta-eta' system in the two mixing angle scheme

2005-01-10

arxiv.org/abs/hep-ph/0501072v2

JHEP 0506:029,2005

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, JHEP style. Comments on the VMD description of the VPgamma decays, the error correlations,the scale dependence of f0

Scientific paper

10.1088/1126-6708/2005/06/029

An analysis of various decay processes is performed using the two mixing angle description of the $\eta$-$\eta^\prime$ system, incorporating the link to the gluonic sector through anomalies. The agreement is excellent. For comparison with previous works, our results are expressed both in the ``octet-singlet'' and in the ``quark-flavour'' basis. It turns out that at the present experimental accuracy, the two angles are significantly different in the former, but not in the latter basis. The implications of our analysis for the Large $N_c$ $\chi$PT predictions are also discussed.

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