English

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

High Energy Physics - Phenomenology 2025-02-11 v1

Abstract

We computed for the first time the τ\tau data-driven Euclidean windows for the hadronic vacuum polarization contribution to the muon g-2. We showed that τ\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, τ\tau-based results are compatible with them. This is particularly interesting, given that the disagreement of the e+ee^+e^- data-driven result with the lattice values in this window is the main cause for their discrepancy, affecting the interpretation of the aμa_\mu measurement in terms of possible new physics.

Keywords

Cite

@article{arxiv.2411.09811,
  title  = {Hadronic vacuum polarization contribution to the muon g-2 on Euclidean windows from tau data},
  author = {Pere Masjuan and Alejandro Miranda and Pablo Roig},
  journal= {arXiv preprint arXiv:2411.09811},
  year   = {2025}
}

Comments

6 pages, 3 figures. Contribution to the proceedings of QNP2024 - The 10th International Conference on Quarks and Nuclear Physics, to be published in PoS