https://doi.org/10.1140/epjs/s11734-026-02147-8
Review
Hadronic contributions to 
within resonance chiral theory
Departmento de Física, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Apartado Postal 14-740, 07360, Mexico City, Mexico
a
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Received:
10
September
2025
Accepted:
19
January
2026
Published online:
6
February
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 
or 
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.
© The Author(s) 2026
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