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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2410.17053 |
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| _version_ | 1866909359060025344 |
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| author | Spiegel, Sebastian Lehner, Christoph |
| author_facet | Spiegel, Sebastian Lehner, Christoph |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_17053 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | A high-precision continuum limit study of the HVP short-distance window Spiegel, Sebastian Lehner, Christoph High Energy Physics - Lattice High Energy Physics - Phenomenology 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. |
| title | A high-precision continuum limit study of the HVP short-distance window |
| topic | High Energy Physics - Lattice High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2410.17053 |