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Time-kernel for lattice determinations of NLO hadronic vacuum polarization contributions to the muon $g$-$2$

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arxiv 2406.17940 v2 pith:MRAGR2YC submitted 2024-06-25 hep-ph hep-lat

classification hep-phhep-lat
keywords contributionsexpansionshadronicmuonpolarizationvacuumdeterminationslattice
verification ladder T0 review T1 audit T2 compute T3 formal

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abstract

We study the time-momentum representation of the kernel needed to compute hadronic vacuum polarization contributions to the muon $g$-$2$ in the space-like region at next-to-leading order. For small values of the time, we present analytical series expansions; for large values of the time, we present numerical series expansions which overcome the problems showed by na\"ive asymptotic expansions. These results are to be employed in lattice QCD determinations of hadronic vacuum polarization contributions to the muon $g$-$2$ at next-to-leading order.

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Cited by 1 Pith paper

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  1. 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.

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