Dimuon and ditau production in photon-photon collisions at next-to-leading order in QED
Abstract Next-to-leading-order (NLO) quantum electrodynamics (QED) corrections to the production of muon and tau pairs in photon-photon collisions, γγ → μ + μ − , τ + τ − , are calculated in the equivalent photon approximation. We mostly consider γγ processes in ultraperipheral collisions of hadrons...
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SpringerOpen
2025-02-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | https://doi.org/10.1007/JHEP02(2025)023 |
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| author | Hua-Sheng Shao David d’Enterria |
| author_facet | Hua-Sheng Shao David d’Enterria |
| author_sort | Hua-Sheng Shao |
| collection | DOAJ |
| description | Abstract Next-to-leading-order (NLO) quantum electrodynamics (QED) corrections to the production of muon and tau pairs in photon-photon collisions, γγ → μ + μ − , τ + τ − , are calculated in the equivalent photon approximation. We mostly consider γγ processes in ultraperipheral collisions of hadrons at the LHC, but the γγ → τ + τ − process in e+e − collisions at LEP is also discussed. The NLO terms are found to modify the total fiducial cross sections by up to 5%, increasing the tails of the dilepton acoplanarity and transverse momentum distributions, and depleting by up to 15% the yields at high masses, with respect to the leading-order predictions including the very small virtuality of the colliding photons. At the LHC, the calculations obtained with the charge form factor for protons and lead ions including the NLO QED corrections improve the data-theory agreement for all measured differential distributions, and prove an indispensable ingredient for the extraction of precision quantities in photon-photon processes, such as the anomalous magnetic moment of the tau lepton. |
| format | Article |
| id | doaj-art-5c34dc4f1c4d4ce8b8d67a121e4b0b64 |
| institution | Kabale University |
| issn | 1029-8479 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj-art-5c34dc4f1c4d4ce8b8d67a121e4b0b642025-02-09T12:08:32ZengSpringerOpenJournal of High Energy Physics1029-84792025-02-012025213010.1007/JHEP02(2025)023Dimuon and ditau production in photon-photon collisions at next-to-leading order in QEDHua-Sheng Shao0David d’Enterria1Laboratoire de Physique Théorique et Hautes Energies (LPTHE), UMR 7589, Sorbonne Université et CNRSCERN, EP DepartmentAbstract Next-to-leading-order (NLO) quantum electrodynamics (QED) corrections to the production of muon and tau pairs in photon-photon collisions, γγ → μ + μ − , τ + τ − , are calculated in the equivalent photon approximation. We mostly consider γγ processes in ultraperipheral collisions of hadrons at the LHC, but the γγ → τ + τ − process in e+e − collisions at LEP is also discussed. The NLO terms are found to modify the total fiducial cross sections by up to 5%, increasing the tails of the dilepton acoplanarity and transverse momentum distributions, and depleting by up to 15% the yields at high masses, with respect to the leading-order predictions including the very small virtuality of the colliding photons. At the LHC, the calculations obtained with the charge form factor for protons and lead ions including the NLO QED corrections improve the data-theory agreement for all measured differential distributions, and prove an indispensable ingredient for the extraction of precision quantities in photon-photon processes, such as the anomalous magnetic moment of the tau lepton.https://doi.org/10.1007/JHEP02(2025)023Precision QEDHigher Order Electroweak CalculationsSpecific BSM Phenomenology |
| spellingShingle | Hua-Sheng Shao David d’Enterria Dimuon and ditau production in photon-photon collisions at next-to-leading order in QED Journal of High Energy Physics Precision QED Higher Order Electroweak Calculations Specific BSM Phenomenology |
| title | Dimuon and ditau production in photon-photon collisions at next-to-leading order in QED |
| title_full | Dimuon and ditau production in photon-photon collisions at next-to-leading order in QED |
| title_fullStr | Dimuon and ditau production in photon-photon collisions at next-to-leading order in QED |
| title_full_unstemmed | Dimuon and ditau production in photon-photon collisions at next-to-leading order in QED |
| title_short | Dimuon and ditau production in photon-photon collisions at next-to-leading order in QED |
| title_sort | dimuon and ditau production in photon photon collisions at next to leading order in qed |
| topic | Precision QED Higher Order Electroweak Calculations Specific BSM Phenomenology |
| url | https://doi.org/10.1007/JHEP02(2025)023 |
| work_keys_str_mv | AT huashengshao dimuonandditauproductioninphotonphotoncollisionsatnexttoleadingorderinqed AT daviddenterria dimuonandditauproductioninphotonphotoncollisionsatnexttoleadingorderinqed |