Decay Constants of Pseudoscalar Mesons to Two Loops in Three-Flavor Partially Quenched χPT

الأصل · EN

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 (PQχPT). Explicit analytical expressions up to O(p⁶) in the momentum expansion are given. The calculations have been performed within the supersymmetric formulation of PQχPT. We also present some numerical results to indicate the size of the corrections.