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New $\tau$-based evaluation of the hadronic vacuum polarization contribution to the muon anomalous magnetic moment

by Jesús Alejandro Miranda Hernández, Pablo Roig Garcés

Submission summary

As Contributors: Jesús Alejandro Miranda Hernández · Pablo Roig
Preprint link: scipost_202111_00007v1
Date submitted: 2021-11-04 03:30
Submitted by: Miranda Hernández, Jesús Alejandro
Submitted to: SciPost Physics Proceedings
Proceedings issue: 16th International Workshop on Tau Lepton Physics (TAU2021)
Academic field: Physics
  • High-Energy Physics - Phenomenology
Approach: Phenomenological


We revisit the radiative corrections to the $\tau^-\to\pi^-\pi^0\nu_\tau(\gamma)$ 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 $\sim2.2\sigma$.

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Submission scipost_202111_00007v1 on 4 November 2021

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