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New τ-based evaluation of the hadronic vacuum polarization contribution to the muon anomalous magnetic moment
by Jesús Alejandro Miranda Hernández, Pablo Roig Garcés
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Submission summary
| Authors (as registered SciPost users): | Jesús Alejandro Miranda Hernández · Pablo Roig |
| Submission information | |
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| Preprint Link: | scipost_202111_00007v1 (pdf) |
| Date accepted: | Dec. 9, 2024 |
| Date submitted: | Nov. 4, 2021, 3:30 a.m. |
| Submitted by: | Miranda Hernández, Jesús Alejandro |
| Submitted to: | SciPost Physics Proceedings |
| Proceedings issue: | 16th International Workshop on Tau Lepton Physics (TAU2021) |
| Ontological classification | |
|---|---|
| Academic field: | Physics |
| Specialties: |
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| Approach: | Phenomenological |
Abstract
We revisit the radiative corrections to the τ−→π−π0ντ(γ) decays using Resonance Chiral Theory for the structure-dependent part. This channel is the most important one to understand the hadronic vacuum polarization piece of the muon g-2, which dominates the uncertainty of its data-driven prediction in the Standard Model. Using our results, the discrepancy between theory and experiment for this observable is reduced to ∼2.2σ.
Published as SciPost Phys. Proc. 16, 032 (2025)
Reports on this Submission
Report #1 by Swagato Banerjee (Referee 1) on 2024-11-22 (Invited Report)
Report
Radiative corrections to the tau- -> pi- pi0 nu_tau (gamma) are revisited using Chiral Resonance theory. This channel gives complementary information on vacuum polarization in the measurement of (g-2)_mu using tau data.
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