${\mathcal{O}(α_s^2 α)}$ corrections to quark form factor
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arXiv
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| Format: | Preprint |
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2025
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| _version_ | 1866914223175499776 |
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| author | Pati, Tanmoy Rana, Narayan Ravindran, V. |
| author_facet | Pati, Tanmoy Rana, Narayan Ravindran, V. |
| contents | We present the analytic results for the non-singlet contributions to the three-loop mixed strong-electroweak ${\mathcal{O}}(α_s^2α)$ virtual corrections to the quark form factors. The primary challenge of this computation arises from the presence of massive vector bosons within the loops. This significantly increases the complexity of the integration-by-parts reduction of the scalar integrals and complicates their evaluation via the method of differential equations. To obtain the physical results, we perform the appropriate ultraviolet renormalization and subtract the universal infrared divergences. The resulting finite remainders are expressed in terms of Harmonic Polylogarithms and Generalized Polylogarithms. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2512_22992 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | ${\mathcal{O}(α_s^2 α)}$ corrections to quark form factor Pati, Tanmoy Rana, Narayan Ravindran, V. High Energy Physics - Phenomenology High Energy Physics - Experiment High Energy Physics - Theory We present the analytic results for the non-singlet contributions to the three-loop mixed strong-electroweak ${\mathcal{O}}(α_s^2α)$ virtual corrections to the quark form factors. The primary challenge of this computation arises from the presence of massive vector bosons within the loops. This significantly increases the complexity of the integration-by-parts reduction of the scalar integrals and complicates their evaluation via the method of differential equations. To obtain the physical results, we perform the appropriate ultraviolet renormalization and subtract the universal infrared divergences. The resulting finite remainders are expressed in terms of Harmonic Polylogarithms and Generalized Polylogarithms. |
| title | ${\mathcal{O}(α_s^2 α)}$ corrections to quark form factor |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment High Energy Physics - Theory |
| url | https://arxiv.org/abs/2512.22992 |