Summary
This paper presents the first data-driven calculation of a specific component contributing to the muon's anomalous magnetic moment, a fundamental quantity in particle physics. The result shows marked tension with eight recent lattice-QCD determinations, indicating a discrepancy whose origin is traced primarily to differences in the light-quark connected component. The findings highlight an unresolved tension between experimental-data-driven and lattice-simulation approaches to this precision measurement.
Key measures
a_{μ}^{win,lqc} (light-quark connected component of intermediate-window hadronic-vacuum-polarisation contribution to muon anomalous magnetic moment), reported as (198.8±1.1)×10^{-10}
Outcomes reported
The study presents the first data-driven determination of the light-quark connected component of the intermediate-window hadronic-vacuum-polarisation contribution to the muon anomalous magnetic moment, yielding (198.8±1.1)×10^{-10}. This result is compared against eight recent lattice-QCD determinations, revealing significant tension between the two computational approaches.
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