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eta-eta' mixing from U_L(3) x U_R(3) Chiral Perturbation Theory

P. Herrera-Siklódy·J. I. Latorre·P. Pascual·J. Taron
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Abstract

We obtain explicit expressions for the ηand η' masses and decay constants using U_L(3) x U_R(3) chiral perturbation theory at next-to-leading order in a combined expansion in p^2 and 1/Nc. A numerical fit of the parameters appearing to this order of the expansion is also discussed.

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P. Herrera-Siklódy, J. I. Latorre, P. Pascual, J. Taron. 1997-10-07. eta-eta' mixing from U_L(3) x U_R(3) Chiral Perturbation Theory. https://doi.org/10.1016/s0370-2693(97)01507-4

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