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Decay Constants of Pseudoscalar Mesons to Two Loops in Three-Flavor Partially Quenched $χ$PT

Johan Bijnens·Timo A. Lahde
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Abstract

This paper presents a first study of the decay constants of the charged, or flavor-off-diagonal, pseudoscalar mesons to two loops for three flavors of sea quarks, in Partially Quenched Chiral Perturbation Theory (PQ$χ$PT). Explicit analytical expressions up to ${\cal O}(p^6)$ in the momentum expansion are given. The calculations have been performed within the supersymmetric formulation of PQ$χ$PT. We also present some numerical results to indicate the size of the corrections.

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BibTeXRIS

Johan Bijnens, Timo A. Lahde. 2005-01-18. Decay Constants of Pseudoscalar Mesons to Two Loops in Three-Flavor Partially Quenched $χ$PT. https://doi.org/10.1103/physrevd.71.094502

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