Long-distance reconstruction of QED corrections to the hadronic vacuum polarization for the muon g-2
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arXiv
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| Autores principales: | , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866909760194871296 |
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| author | Lehner, Christoph Parrino, Julian Völklein, Andreas |
| author_facet | Lehner, Christoph Parrino, Julian Völklein, Andreas |
| contents | The long-distance contribution of QED corrections to the hadronic vacuum polarization is particularly challenging to compute in lattice QCD+QED. Currently, it is one of the limiting factors towards matching the precision of the recent result by the Fermilab E989 experiment for the muon g-2. In this work, we present a method for obtaining high-precision results for this contribution by reconstructing exclusive finite-volume state contributions. We find relations between the pion-photon contributions of individual diagrams and demonstrate the reconstruction method with lattice QCD+QED data at a single lattice spacing of $a^{-1} \approx 1.73$ GeV and $m_π\approx 275$ MeV. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_21685 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Long-distance reconstruction of QED corrections to the hadronic vacuum polarization for the muon g-2 Lehner, Christoph Parrino, Julian Völklein, Andreas High Energy Physics - Lattice High Energy Physics - Phenomenology High Energy Physics - Theory The long-distance contribution of QED corrections to the hadronic vacuum polarization is particularly challenging to compute in lattice QCD+QED. Currently, it is one of the limiting factors towards matching the precision of the recent result by the Fermilab E989 experiment for the muon g-2. In this work, we present a method for obtaining high-precision results for this contribution by reconstructing exclusive finite-volume state contributions. We find relations between the pion-photon contributions of individual diagrams and demonstrate the reconstruction method with lattice QCD+QED data at a single lattice spacing of $a^{-1} \approx 1.73$ GeV and $m_π\approx 275$ MeV. |
| title | Long-distance reconstruction of QED corrections to the hadronic vacuum polarization for the muon g-2 |
| topic | High Energy Physics - Lattice High Energy Physics - Phenomenology High Energy Physics - Theory |
| url | https://arxiv.org/abs/2508.21685 |