The eta mass and NNLO Three-Flavor Partially Quenched Chiral Perturbation Theory
Johan Bijnens, Niclas Danielsson
Abstract
We show how to resum neutral propagators to all orders in Partially Quenched Chiral Perturbation Theory. We calculate the relevant quantities to next-to-next-to-leading order (NNLO). Using these results we show how to extend the proposal by Sharpe and Shoresh for determining the parameters relevant for the eta mass from partially quenched lattice QCD calculations to NNLO.
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