Improved evaluation of the electroweak contribution to 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_ | 1866915294615699456 |
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| author | Hoferichter, Martin Lüdtke, Jan Naterop, Luca Procura, Massimiliano Stoffer, Peter |
| author_facet | Hoferichter, Martin Lüdtke, Jan Naterop, Luca Procura, Massimiliano Stoffer, Peter |
| contents | A precise evaluation of the electroweak contribution to the anomalous magnetic moment of the muon requires control over all aspects of the Standard Model, ranging from Higgs physics, over multi-loop computations for bosonic and (heavy-)fermion diagrams, to non-perturbative effects in the presence of light quarks. Currently, the dominant uncertainties arise from such hadronic effects in the vector-vector-axial-vector three-point function, an improved understanding of which has recently emerged in the context of hadronic light-by-light scattering. Profiting from these developments as well as new perturbative and non-perturbative input for the charm contribution, we obtain $a_μ^\text{EW}=154.4(4)\times 10^{-11}$. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2503_04883 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Improved evaluation of the electroweak contribution to muon $g-2$ Hoferichter, Martin Lüdtke, Jan Naterop, Luca Procura, Massimiliano Stoffer, Peter High Energy Physics - Phenomenology High Energy Physics - Experiment High Energy Physics - Lattice Nuclear Theory A precise evaluation of the electroweak contribution to the anomalous magnetic moment of the muon requires control over all aspects of the Standard Model, ranging from Higgs physics, over multi-loop computations for bosonic and (heavy-)fermion diagrams, to non-perturbative effects in the presence of light quarks. Currently, the dominant uncertainties arise from such hadronic effects in the vector-vector-axial-vector three-point function, an improved understanding of which has recently emerged in the context of hadronic light-by-light scattering. Profiting from these developments as well as new perturbative and non-perturbative input for the charm contribution, we obtain $a_μ^\text{EW}=154.4(4)\times 10^{-11}$. |
| title | Improved evaluation of the electroweak contribution to muon $g-2$ |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment High Energy Physics - Lattice Nuclear Theory |
| url | https://arxiv.org/abs/2503.04883 |