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

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

来源:Arxiv_logoArxiv
英文摘要

We present results for the dominant light-quark connected contribution to the long-distance window (LD) of the hadronic vacuum polarization contribution (HVP) to the muon $g-2$ from lattice quantum chromodynamics (QCD). Specifically, with a new determination of the lattice scale on MILC's physical-mass HISQ ensembles, using the $Ω^-$ baryon mass, we obtain a result of $400.2(2.3)_{\mathrm{stat}}(3.7)_{\mathrm{syst}}[4.3]_{\mathrm{total}} \times 10^{-10}$. Summing this result with our recent determinations of the light-quark connected contributions to the short- (SD) and intermediate-distance (W) windows, we obtain a sub-percent precision determination of the light-quark-connected contribution to HVP of $655.5(2.3)_{\mathrm{stat}}(3.9)_{\mathrm{syst}}[4.5]_{\mathrm{total}} \times 10^{-10}$. Finally, as a consistency check, we verify that an independent analysis of the full contribution is in agreement with the sum of individual windows. We discuss our future plans for improvements of our HVP calculations to meet the target precision of the Fermilab $g-2$ experiment.

Alejandro Vaquero、Ruth S. Van de Water、Jack Laiho、G. Peter Lepage、Alexei Bazavov、Claude W. Bernard、David A. Clarke、Christine Davies、Carleton DeTar、Aida X. El-Khadra、Elvira Gámiz、Steven Gottlieb、Anthony V. Grebe、Leon Hostetler、William I. Jay、Hwancheol Jeong、Andreas S. Kronfeld、Shaun Lahert、Michael Lynch、Andrew T. Lytle、Craig McNeile、Ethan T. Neil、Curtis T. Peterson、James N. Simone、Jacob W. Sitison

10.1103/d583-yhfs

物理学

Alejandro Vaquero,Ruth S. Van de Water,Jack Laiho,G. Peter Lepage,Alexei Bazavov,Claude W. Bernard,David A. Clarke,Christine Davies,Carleton DeTar,Aida X. El-Khadra,Elvira Gámiz,Steven Gottlieb,Anthony V. Grebe,Leon Hostetler,William I. Jay,Hwancheol Jeong,Andreas S. Kronfeld,Shaun Lahert,Michael Lynch,Andrew T. Lytle,Craig McNeile,Ethan T. Neil,Curtis T. Peterson,James N. Simone,Jacob W. Sitison.Hadronic vacuum polarization for the muon $g-2$ from lattice QCD: Long-distance and full light-quark connected contribution[EB/OL].(2025-07-06)[2025-07-23].https://arxiv.org/abs/2412.18491.点此复制

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