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Tau data-based evaluations of the hadronic vacuum polarization contribution to the muon g-2

Pere Masjuan, Alejandro Miranda, Pablo Roig

SciPost Phys. Proc. 17, 023 (2025) · published 23 July 2025

Proceedings event

17th International Workshop on Tau Lepton Physics

Abstract

We review the $\tau$ data-driven computation of Euclidean windows for the hadronic vacuum polarization contribution to the muon anomalous magnetic moment ($a_\mu$), which agree with the lattice results, making the difference of the $e^+e^-$ data-driven methods with them more intriguing. This conundrum needs to be solved by next year, when the final FNAL $a_\mu$ measurement will be published, in order to extract firm conclusions on possible new physics effects.


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