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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

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

Genessa Benton , Diogo Boito , Maarten Golterman , Alexander Keshavarzi , Kim Maltman , Santiago Peris This is my paper
classification hep-ph hep-lat
keywords componentconnecteddata-drivenlight-quarkcontributiondeterminationsintermediate-windowmuon
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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 3 Pith papers

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

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

    hep-ph 2026-05 conditional novelty 6.0

    Isospin-corrected inclusive τ spectral functions yield light-quark-connected HVP and window quantities consistent with lattice QCD, but the 2π⁻π⁺π⁰ mode differs significantly from e⁺e⁻-based Pais expectations.

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

    hep-lat 2026-03 conditional novelty 6.0

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

    hep-ph 2026-05 unverdicted novelty 4.0

    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.