On the Charm Contribution to the Muon $g-2$ Light-by-Light
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| Format: | Preprint |
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2025
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| _version_ | 1866914327114547200 |
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| author | Bijnens, Johan Hermansson-Truedsson, Nils Rodríguez-Sánchez, Antonio |
| author_facet | Bijnens, Johan Hermansson-Truedsson, Nils Rodríguez-Sánchez, Antonio |
| contents | We combine existing perturbative results to show that a precise analytic determination of the charm-quark contribution to the hadronic light-by-light (HLbL) part of the muon anomalous magnetic moment is possible. Working in the $\overline{\mathrm{MS}}$ scheme, we include the NLO $\mathcal{O}(α_s)$ correction, which significantly reduces the residual renormalization-scale dependence and the perturbative uncertainty. Our final result is $a_μ^{\mathrm{HLbLc}}=3.65(25)\times 10^{-11}$, in good agreement with recent lattice determinations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_13097 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | On the Charm Contribution to the Muon $g-2$ Light-by-Light Bijnens, Johan Hermansson-Truedsson, Nils Rodríguez-Sánchez, Antonio High Energy Physics - Phenomenology We combine existing perturbative results to show that a precise analytic determination of the charm-quark contribution to the hadronic light-by-light (HLbL) part of the muon anomalous magnetic moment is possible. Working in the $\overline{\mathrm{MS}}$ scheme, we include the NLO $\mathcal{O}(α_s)$ correction, which significantly reduces the residual renormalization-scale dependence and the perturbative uncertainty. Our final result is $a_μ^{\mathrm{HLbLc}}=3.65(25)\times 10^{-11}$, in good agreement with recent lattice determinations. |
| title | On the Charm Contribution to the Muon $g-2$ Light-by-Light |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2511.13097 |