Hadronic contributions to $α(Q^{2})$ and $\sin^{2}θ_{W}(Q^{2})$ from spectral reconstruction of lattice-QCD data
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| Main Authors: | , , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866908990942740480 |
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| author | del Pino, Adrián Clarke, David A. DeTar, Carleton El-Khadra, Aida X. Gámiz, Elvira Gottlieb, Steven Grebe, Anthony V. Hostetler, Leon Jay, William I. Kronfeld, Andreas S. Lahert, Shaun Laiho, Jack Lynch, Michael Lytle, Andrew T. Neil, Ethan T. Peterson, Curtis T. Simone, James N. Sitison, Jacob W. Van de Water, Ruth S. Vaquero, Alejandro |
| author_facet | del Pino, Adrián Clarke, David A. DeTar, Carleton El-Khadra, Aida X. Gámiz, Elvira Gottlieb, Steven Grebe, Anthony V. Hostetler, Leon Jay, William I. Kronfeld, Andreas S. Lahert, Shaun Laiho, Jack Lynch, Michael Lytle, Andrew T. Neil, Ethan T. Peterson, Curtis T. Simone, James N. Sitison, Jacob W. Van de Water, Ruth S. Vaquero, Alejandro |
| contents | We present preliminary results from a lattice-QCD study of the hadronic contributions to the running of the electromagnetic coupling, $Δα(Q^2)$, and the electroweak mixing angle, $Δ\sin^2θ_{W}(Q^2)$. Using $N_f = 2+1+1$ HISQ ensembles at physical quark masses, we discuss the challenges posed by strong statistical correlations in the time-momentum representation and propose a spectral-reconstruction strategy to obtain controlled continuum-extrapolated results across the full energy range. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_22349 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Hadronic contributions to $α(Q^{2})$ and $\sin^{2}θ_{W}(Q^{2})$ from spectral reconstruction of lattice-QCD data del Pino, Adrián Clarke, David A. DeTar, Carleton El-Khadra, Aida X. Gámiz, Elvira Gottlieb, Steven Grebe, Anthony V. Hostetler, Leon Jay, William I. Kronfeld, Andreas S. Lahert, Shaun Laiho, Jack Lynch, Michael Lytle, Andrew T. Neil, Ethan T. Peterson, Curtis T. Simone, James N. Sitison, Jacob W. Van de Water, Ruth S. Vaquero, Alejandro High Energy Physics - Lattice We present preliminary results from a lattice-QCD study of the hadronic contributions to the running of the electromagnetic coupling, $Δα(Q^2)$, and the electroweak mixing angle, $Δ\sin^2θ_{W}(Q^2)$. Using $N_f = 2+1+1$ HISQ ensembles at physical quark masses, we discuss the challenges posed by strong statistical correlations in the time-momentum representation and propose a spectral-reconstruction strategy to obtain controlled continuum-extrapolated results across the full energy range. |
| title | Hadronic contributions to $α(Q^{2})$ and $\sin^{2}θ_{W}(Q^{2})$ from spectral reconstruction of lattice-QCD data |
| topic | High Energy Physics - Lattice |
| url | https://arxiv.org/abs/2604.22349 |