The hadronic light-by-light contribution to the muon anomalous magnetic moment and renormalization group for EFT
Dept. of Astronomy and Theoretical Physics, Lund University, Sölvegatan 14A, 22362 Lund, Sweden
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We give a short overview of the theory of the muon anomalous magnetic moment with emphasis on the hadronic light-by-light and the pion loop contribution. We explain the difference between the hidden local symmetry and full VMD pion loop and discuss leading logarithms in the anomalous sector of 2-flavour chiral perturbation theory.
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