Short-flow-time expansion of non-singlet twist-two operators at next-to-next-to-leading order QCD
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| Format: | Preprint |
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2025
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| _version_ | 1866914166423420928 |
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| author | Harlander, Robert V. Kohnen, Jonas T. Shindler, Andrea |
| author_facet | Harlander, Robert V. Kohnen, Jonas T. Shindler, Andrea |
| contents | The gradient-flow formalism provides a framework for the direct determination of moments of parton distribution functions (PDFs) from lattice QCD calculations. Their conversion from the gradient-flow scheme to $\overline{\text{MS}}$ requires the matching coefficients of the short-flow-time expansion, which can be computed perturbatively. We determine these coefficients for the first six non-singlet PDF moments up to next-to-next-to-leading order in the strong coupling. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2511_17145 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Short-flow-time expansion of non-singlet twist-two operators at next-to-next-to-leading order QCD Harlander, Robert V. Kohnen, Jonas T. Shindler, Andrea High Energy Physics - Phenomenology High Energy Physics - Lattice The gradient-flow formalism provides a framework for the direct determination of moments of parton distribution functions (PDFs) from lattice QCD calculations. Their conversion from the gradient-flow scheme to $\overline{\text{MS}}$ requires the matching coefficients of the short-flow-time expansion, which can be computed perturbatively. We determine these coefficients for the first six non-singlet PDF moments up to next-to-next-to-leading order in the strong coupling. |
| title | Short-flow-time expansion of non-singlet twist-two operators at next-to-next-to-leading order QCD |
| topic | High Energy Physics - Phenomenology High Energy Physics - Lattice |
| url | https://arxiv.org/abs/2511.17145 |