Next-to-Leading-Order QCD Predictions for the $Σ$ Dirac Form Factors
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arXiv
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| Auteurs principaux: | , , |
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| Format: | Preprint |
| Publié: |
2026
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| _version_ | 1866908834642001920 |
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| author | Shi, Bo-Xuan Yu, Hui-Xin Zhao, Xue-Chen |
| author_facet | Shi, Bo-Xuan Yu, Hui-Xin Zhao, Xue-Chen |
| contents | In this work, we compute the next-to-leading-order QCD corrections to the Dirac electromagnetic form factors of the $Σ$ hyperons within the hard-collinear factorization framework at leading power. The corresponding short-distance coefficient functions are extracted from the relevant seven-point partonic correlation functions. We find that the one-loop radiative corrections to the leading-twist hard-scattering contributions are numerically significant over a broad range of momentum transfer. Combining the perturbatively calculated hard kernels with nonperturbative $Σ$ distribution amplitudes determined from lattice QCD, we present state-of-the-art theoretical predictions for the $Σ$ hyperon electromagnetic form factors. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_13716 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Next-to-Leading-Order QCD Predictions for the $Σ$ Dirac Form Factors Shi, Bo-Xuan Yu, Hui-Xin Zhao, Xue-Chen High Energy Physics - Phenomenology High Energy Physics - Experiment High Energy Physics - Lattice In this work, we compute the next-to-leading-order QCD corrections to the Dirac electromagnetic form factors of the $Σ$ hyperons within the hard-collinear factorization framework at leading power. The corresponding short-distance coefficient functions are extracted from the relevant seven-point partonic correlation functions. We find that the one-loop radiative corrections to the leading-twist hard-scattering contributions are numerically significant over a broad range of momentum transfer. Combining the perturbatively calculated hard kernels with nonperturbative $Σ$ distribution amplitudes determined from lattice QCD, we present state-of-the-art theoretical predictions for the $Σ$ hyperon electromagnetic form factors. |
| title | Next-to-Leading-Order QCD Predictions for the $Σ$ Dirac Form Factors |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment High Energy Physics - Lattice |
| url | https://arxiv.org/abs/2602.13716 |