Masses and Decay Constants of Pseudoscalar Mesons to Two Loops in Two-Flavor Partially Quenched Chiral Perturbation Theory
Abstract
This paper presents a first study of the masses and decay constants of the charged, or flavor-off-diagonal, pseudoscalar mesons to two loops for two flavors of sea-quarks, in Partially Quenched Chiral Perturbation Theory (PQ). Explicit analytical expressions up to O(p6) in the momentum expansion are given. The calculations have been performed within the supersymmetric formulation of PQ. A numerical analysis is done to indicate the size of the corrections.
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