Hadronic contributions to $$a_\mu$$ within resonance chiral theory
Emilio J. Estrada, Alejandro Miranda, Pablo Roig · The European Physical Journal Special Topics · 2026
Abstract We review the recent progress achieved, using resonance chiral theory, in the hadronic contributions to the muon anomalous magnetic moment. These include the hadronic vacuum polarization, either using $$e^+e^-$$ e + e - or $$\tau$$ τ decays into hadron final states as input; and the hadronic light-by-light part, where in addition to previous results on the lightest pseudoscalar and tensor-poles contributions, we first present the evaluation of the pseudoscalar box using this formalism. We also discuss the scalar, axial-pole and other subleading pieces. The results obtained are consistent with the White Paper 2 values, with comparable precision.