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1. 1. Fitting the three loop pion mass and decay constant to lattice data

   University essay from Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisation

   Author : Alexandra Wernersson; [2019]
   Keywords : Chiral Perturbation Theory; Lattice QCD; pion mass; decay constant; three loop fit.; Physics and Astronomy;

   Abstract : We perform a fit to three loop order (NNNLO) in Chiral perturbation theory of the pion mass and decay constant. In particular we investigate if the NNNLO fit is an improvement of the fit to two loop order (NNLO) to lattice QCD data, which was done in a lattice gauge group collaboration. READ MORE