Progress in chiral perturbation theory
Abstract
After a short status report on chiral perturbation theory, I review recent progress in determining some of the low-energy couplings by matching the effective theory to QCD. Consequences for Kl3 decays and for the extraction of the CKM matrix element Vus are reported. Hadronic vacuum polarization at low energies and its impact on the anomalous magnetic moment of the muon are discussed.
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