An update of Euclidean windows of the hadronic vacuum polarization

T. Blum, P. A. Boyle, M. Bruno, D. Giusti, V. Gülpers, R. C. Hill, T. Izubuchi, Y. -C. Jang, L. Jin, C. Jung, A. Jüttner, C. Kelly, C. Lehner, N. Matsumoto, R. D. Mawhinney, A. S. Meyer, J. T. Tsang

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

We compute the standard Euclidean window of the hadronic vacuum polarization using multiple independent blinded analyses. We improve the continuum and infinite-volume extrapolations of the dominant quark-connected light-quark isospin-symmetric contribution and address additional subleading systematic effects from sea-charm quarks and residual chiral-symmetry breaking from first principles. We find aWμ=235.56(65)(50)×10−10, which is in 3.8σ tension with the recently published dispersive result of aWμ=229.4(1.4)×10−10 [G. Colangelo, A. X. El-Khadra, M. Hoferichter, A. Keshavarzi, C. Lehner, P. Stoffer, and T. Teubner, Phys. Lett. B 833, 137313 (2022)] and in agreement with other recent lattice determinations. We also provide a result for the standard short-distance window. The results reported here are unchanged compared to our presentation at the Edinburgh workshop of the g-2 Theory Initiative in 2022 [C. Lehner, Talk Presented at the 5th Plenary Meeting of the g-2 Theory Initiative in Edinburgh (2022)].
Original languageEnglish
Article number054507
Pages (from-to)1-20
Number of pages20
JournalPhysical Review D, particles, fields, gravitation, and cosmology
Issue number5
Publication statusPublished - 26 Sept 2023

Keywords / Materials (for Non-textual outputs)

  • hep-lat
  • hep-ph


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