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Data-Driven Determination of the Light-Quark Connected Component of the Intermediate-Window Contribution to the Muon
Genessa Benton1, Diogo Boito2, Maarten Golterman1
1Department of Physics and Astronomy, San Francisco State University, San Francisco, California 94132, USA.
Abstract:
We present the first data-driven result for a_{μ}^{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±1.1)×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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