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

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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Publication Details

Published
2025-02-07
DOI
https://doi.org/10.22323/1.465.0216
Citations
2
Primary Topic
Particle physics theoretical and experimental studies
Type
article
Field-Weighted Citation Impact
3.74

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article

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

Pablo Roig, A. Miranda, Pere Masjuan
2 citations
Particle physics theoretical and experimental studies
3.74
article

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

Pablo Roig, A. Miranda, Pere Masjuan
article en
2 citations

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.

Generalitat de Catalunya, Ministerio de Ciencia e Innovación, Institut de Física d'Altes Energies
Affordable and clean energy
Openalex Percentile: Top 9%
Particle physics theoretical and experimental studies
3.74
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