Three-loop helicity amplitudes of four-lepton scattering in QED
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arXiv
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| Main Authors: | , , , , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866911440273670144 |
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| author | Crisanti, Giulio Dave, Thomas Mastrolia, Pierpaolo Ronca, Jonathan Smith, Sid Bobadilla, William J. Torres |
| author_facet | Crisanti, Giulio Dave, Thomas Mastrolia, Pierpaolo Ronca, Jonathan Smith, Sid Bobadilla, William J. Torres |
| contents | We present the analytic expressions of the three-loop virtual corrections to the helicity amplitudes of 2 -> 2 four-fermion scattering processes in massless QED. The contributing Feynman diagrams are grouped into integrand families characterised by independent Symanzik polynomials and decomposed in terms of master integrals using an optimised integration-by-parts strategy. Upon the renormalisation of the ultraviolet divergences and the extraction of the universal infrared pole structure, the finite results are expressed in terms of generalised polylogarithms up to transcendental weight six. Amplitudes for dimuon production in electron-positron annihilations, electron-muon scattering, and Bhabha scattering are explicitly derived. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_10807 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Three-loop helicity amplitudes of four-lepton scattering in QED Crisanti, Giulio Dave, Thomas Mastrolia, Pierpaolo Ronca, Jonathan Smith, Sid Bobadilla, William J. Torres High Energy Physics - Phenomenology High Energy Physics - Theory We present the analytic expressions of the three-loop virtual corrections to the helicity amplitudes of 2 -> 2 four-fermion scattering processes in massless QED. The contributing Feynman diagrams are grouped into integrand families characterised by independent Symanzik polynomials and decomposed in terms of master integrals using an optimised integration-by-parts strategy. Upon the renormalisation of the ultraviolet divergences and the extraction of the universal infrared pole structure, the finite results are expressed in terms of generalised polylogarithms up to transcendental weight six. Amplitudes for dimuon production in electron-positron annihilations, electron-muon scattering, and Bhabha scattering are explicitly derived. |
| title | Three-loop helicity amplitudes of four-lepton scattering in QED |
| topic | High Energy Physics - Phenomenology High Energy Physics - Theory |
| url | https://arxiv.org/abs/2602.10807 |