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Data-driven determination of the light-quark connected component of the intermediate-window contribution to the muon $g-2$

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arxiv 2306.16808 v2 pith:5ZRKUVM5 submitted 2023-06-29 hep-ph hep-lat

Genessa Benton , Diogo Boito , Maarten Golterman , Alexander Keshavarzi , Kim Maltman , Santiago Peris This is my paper · ORCID
classification hep-phhep-lat
keywords componentconnecteddata-drivenlight-quarkcontributiondeterminationsintermediate-windowmuon
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abstract

We present the first data-driven result for $a_\mu^{\rm win,lqc}$, the isospin-limit light-quark connected component of the intermediate-window Hadronic-Vacuum-Polarization contribution to the muon anomalous magnetic moment. Our result, $(198.8\pm 1.1)\times 10^{-10}$, is in significant tension with eight recent mutually compatible high-precision lattice-QCD determinations, and provides enhanced evidence for a puzzling discrepancy between lattice and data-driven determinations of the intermediate window quantity, one driven largely by a difference in the light-quark connected component.

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Cited by 5 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Comparison of the hadronic vacuum polarization between hadronic $\tau$-decay data and lattice QCD

    hep-ph 2026-05 unverdicted novelty 6.0 of 10

    Lattice QCD and tau-decay dispersive calculations of isospin-one HVP generally agree, except for a significant difference in the 2π−π+π0 four-pion mode contribution to window quantities.

  2. BMW/DMZ calculation of the hadronic vacuum polarisation for the muon magnetic moment

    hep-lat 2026-03 conditional novelty 6.0 of 10

    A hybrid lattice-QCD plus e+e- data determination of the hadronic vacuum polarisation gives a Standard Model muon g-2 prediction 0.5σ from experiment, at 0.45% precision.

  3. Hadronic vacuum polarization for the muon $g-2$ from lattice QCD: Long-distance and full light-quark connected contribution

    hep-lat 2024-12 conditional novelty 6.0 of 10

    The light-quark connected hadronic vacuum polarization contribution to muon g-2 is determined to 0.69% precision, 655.2(4.5) x 10^-10, from lattice QCD.

  4. Hadronic vacuum polarization for the muon $g-2$ from lattice QCD: Complete short and intermediate windows

    hep-lat 2024-11 conditional novelty 6.0 of 10

    The complete short- and intermediate-distance hadronic vacuum polarization contributions to the muon g-2 are computed on the lattice with 0.31% and 0.36% total errors.

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

    hep-ph 2024-11 conditional novelty 3.0 of 10

    Tau data give an independent, lattice-compatible value for the intermediate-window hadronic vacuum polarization, disagreeing with the e+e- data-driven value that drives the muon g-2 tension.

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