eta and eta' hadronic decays in U_L(3)xU_R(3) Chiral Perturbation Theory

Details eta and eta' hadronic decays in U_L(3)xU_R(3) Chiral Perturbation Theory eta and eta' hadronic decays in U_L(3)xU_R(3) Chiral Perturbation Theory

1999-02-23

arxiv.org/abs/hep-ph/9902446v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

LateX, 23 pages, 1 eps figure

Scientific paper

The decays eta/eta' -> pi pi pi and eta' -> eta pi pi are studied up to leading and next-to-leading order within the framework of U_L(3)xU_R(3) Chiral Perturbation Theory. The analysis incorporates important features of the eta-eta' system, such as the contribution of the glueball alphaG\~G due to the axial anomaly and eta_0/eta_8 mixing. One-loop corrections, which are third-order contributions according to the combined chiral and 1/Nc expansion, are not included. Reasonably good results are obtained in most cases.

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