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arXiv · 2411.09811

Hadronic vacuum polarization contribution to the muon g-2 on Euclidean windows from tau data

Pere Masjuan·Alejandro Miranda·Pablo Roig
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Abstract

We computed for the first time the $\tau$ data-driven Euclidean windows for the hadronic vacuum polarization contribution to the muon g-2. We showed that $\tau$-based results agree with the available lattice window evaluations and with the full result. On the intermediate window, where all lattice evaluations are rather precise and agree, $\tau$-based results are compatible with them. This is particularly interesting, given that the disagreement of the $e^+e^-$ data-driven result with the lattice values in this window is the main cause for their discrepancy, affecting the interpretation of the $a_\mu$ measurement in terms of possible new physics.

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Pere Masjuan, Alejandro Miranda, Pablo Roig. 2024-11-14. Hadronic vacuum polarization contribution to the muon g-2 on Euclidean windows from tau data. https://arxiv.org/abs/2411.09811

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