We provide the first ab initio calculation of the Euclidean long-distance window of the isospin-symmetric light-quark connected contribution to the hadronic vacuum polarization for the muon g-2 and find aμLD,iso,conn,ud=411.4(4.3)(2.4)×10-10. We also provide the currently most precise calculation of the total isospin-symmetric light-quark connected contribution, aμiso,conn,ud=666.2(4.3)(2.5)×10-10 in the BMW20 world, which is more than 4σ larger compared to the data-driven estimates of Boito et al. [Phys. Rev. D 107, 074001 (2023)PRVDAQ2470-001010.1103/PhysRevD.107.074001] and 1.7σ larger compared to the lattice QCD result of BMW20.
Blum, T., Boyle, P., Bruno, M., Chakraborty, B., Erben, F., Gülpers, V., et al. (2025). Long-Distance Window of the Hadronic Vacuum Polarization for the Muon g-2. PHYSICAL REVIEW LETTERS, 134(20) [10.1103/PhysRevLett.134.201901].
Long-Distance Window of the Hadronic Vacuum Polarization for the Muon g-2
Bruno M.;
2025
Abstract
We provide the first ab initio calculation of the Euclidean long-distance window of the isospin-symmetric light-quark connected contribution to the hadronic vacuum polarization for the muon g-2 and find aμLD,iso,conn,ud=411.4(4.3)(2.4)×10-10. We also provide the currently most precise calculation of the total isospin-symmetric light-quark connected contribution, aμiso,conn,ud=666.2(4.3)(2.5)×10-10 in the BMW20 world, which is more than 4σ larger compared to the data-driven estimates of Boito et al. [Phys. Rev. D 107, 074001 (2023)PRVDAQ2470-001010.1103/PhysRevD.107.074001] and 1.7σ larger compared to the lattice QCD result of BMW20.
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