Fermionic Electroweak Two-Loop Corrections to Drell-Yan and Related Processes
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arXiv
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| Format: | Preprint |
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2025
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| _version_ | 1866913171479986176 |
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| author | Freitas, Ayres Wallace, E. Jackson |
| author_facet | Freitas, Ayres Wallace, E. Jackson |
| contents | We perform a complete calculation of the next-to-next-to-leading order (NNLO) electroweak fermionic corrections to fermion-pair production processes, where "fermionic" refers to contributions with closed fermion loops. We did this via a semi-numerical technique that uses dispersion relations for the fermion sub-loop in two-loop box and vertex diagrams and dispersion relations and Feynman parameters for vertex diagrams with fermionic triangle sub-loops. UV and IR divergences are treated with suitable subtraction terms. We present numerical results for the cross-sections of $e^+e^-\to μ^+μ^-/u\bar{u}/d\bar{d}$ and differential distributions at representative center-of-mass energies. The NNLO corrections are found to modify the NLO cross-section on the order of 1%. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2512_15700 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Fermionic Electroweak Two-Loop Corrections to Drell-Yan and Related Processes Freitas, Ayres Wallace, E. Jackson High Energy Physics - Phenomenology We perform a complete calculation of the next-to-next-to-leading order (NNLO) electroweak fermionic corrections to fermion-pair production processes, where "fermionic" refers to contributions with closed fermion loops. We did this via a semi-numerical technique that uses dispersion relations for the fermion sub-loop in two-loop box and vertex diagrams and dispersion relations and Feynman parameters for vertex diagrams with fermionic triangle sub-loops. UV and IR divergences are treated with suitable subtraction terms. We present numerical results for the cross-sections of $e^+e^-\to μ^+μ^-/u\bar{u}/d\bar{d}$ and differential distributions at representative center-of-mass energies. The NNLO corrections are found to modify the NLO cross-section on the order of 1%. |
| title | Fermionic Electroweak Two-Loop Corrections to Drell-Yan and Related Processes |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2512.15700 |