Work

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

Year: 2025

Type: conference-paper

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.

Source: International Conference on Quarks and Nuclear Physics (QNP)

DOI: 10.22323/1.465.0216

Authors: Pablo Roig, Pere Masjuan, Alejandro Miranda

Institutions: Institute for High Energy Physics, Barcelona Institute of Science and Technology, Instituto Politécnico Nacional, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Universitat Autònoma de Barcelona

Language: English

Topic: Particle physics theoretical and experimental studies

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funders: Generalitat de Catalunya, Ministerio de Ciencia e Innovación, Institut de Física d'Altes Energies

Awards: G1046265085, G1284722453, G1419670400, G5805502524, G6887602227