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A high-precision continuum limit study of the HVP short-distance window by Spiegel, Sebastian; Lehner, Christoph is a scholarly article available to read on EtoBox.

What is A high-precision continuum limit study of the HVP short-distance window about?

The separation of the hadronic vacuum polarization (HVP) contribution to the muon anomalous magnetic moment into Euclidean windows allows for a tailored approach to address the different dominant challenges at short, intermediate, and long distances. We present a novel approach to compute the short-distance window without the need for using perturbative QCD. We combine a quenched continuum extrapolation using 18 lattice spacings ($1.6 \,\text{GeV} \lesssim a^{-1} \lesssim 6.1\,\text{GeV}$) with a separate continuum extrapolation of the sea-quark effects. This method allows for the computationally expensive sea-quark effects to be estimated using only a smaller number of ensembles at coarser lattice spacings, while largely confining the logarithmic dependency of the continuum extrapolation to the quenched component.

Author

Spiegel, Sebastian; Lehner, Christoph

Published

2024

Language

EN