Partially Quenched Chiral Perturbation Theory to NNLO
Timo A. Lahde, Johan Bijnens, Niclas Danielsson
Abstract
This paper summarizes the recent calculations of the masses and decay constants of the pseudoscalar mesons at the two-loop level, or NNLO, in Partially Quenched Chiral Perturbation Theory (PQxPT). Possible applications include chiral extrapolations of Lattice QCD, as well as the determination of the low-energy constants (LEC:s) of QCD.
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