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

### 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 Specialties: High-Energy Physics - Phenomenology Approach: Phenomenological

### Abstract

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 $\sim2.2\sigma$.

###### Current status:
Editor-in-charge assigned