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arXiv · 1406.4671

Moment Analysis of Hadronic Vacuum Polarization - Proposal for a lattice QCD evaluation of $g_μ-2$

Eduardo de Rafael
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Abstract

I suggest a new approach to the determination of the hadronic vacuum polarization (HVP) contribution to the anomalous magnetic moment of the muon $a_μ^{\rm HVP}$ in lattice QCD. It is based on properties of the Mellin transform of the hadronic spectral function and their relation to the HVP self energy in the Euclidean. I show how $a_μ^{\rm HVP}$ is very well approximated by a few moments associated to this Mellin transform and how these moments can be evaluated in lattice QCD, providing thus a series of tests when compared with the corresponding determinations using experimental data.

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Eduardo de Rafael. 2014-06-18. Moment Analysis of Hadronic Vacuum Polarization - Proposal for a lattice QCD evaluation of $g_μ-2$. https://doi.org/10.1016/j.physletb.2014.08.003

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