Electroweak corrections to $τ^+τ^-$ production in ultraperipheral heavy-ion collisions at the LHC
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arXiv
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| Autores principales: | , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866911094185918464 |
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| author | Dittmaier, Stefan Engel, Tim Ariza, Jose Luis Hernando Pellen, Mathieu |
| author_facet | Dittmaier, Stefan Engel, Tim Ariza, Jose Luis Hernando Pellen, Mathieu |
| contents | While the anomalous magnetic moments of the electron and the muon have been measured with remarkable precision, the magnetic moment of the $τ$-lepton is only known to rather limited precision. A promising approach to measure it exploits $τ^+τ^-$ production in ultraperipheral collisions of lead ions at the LHC. In this article, a state-of-the-art theory prediction for $τ^+τ^-$ production including leptonic $τ$-decays is provided. The impact of spin correlations between the $τ$-leptons, of the masses of final-state leptons, of next-to-leading-order electroweak corrections, and of the parametrization of the photon flux are discussed. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_11391 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Electroweak corrections to $τ^+τ^-$ production in ultraperipheral heavy-ion collisions at the LHC Dittmaier, Stefan Engel, Tim Ariza, Jose Luis Hernando Pellen, Mathieu High Energy Physics - Phenomenology While the anomalous magnetic moments of the electron and the muon have been measured with remarkable precision, the magnetic moment of the $τ$-lepton is only known to rather limited precision. A promising approach to measure it exploits $τ^+τ^-$ production in ultraperipheral collisions of lead ions at the LHC. In this article, a state-of-the-art theory prediction for $τ^+τ^-$ production including leptonic $τ$-decays is provided. The impact of spin correlations between the $τ$-leptons, of the masses of final-state leptons, of next-to-leading-order electroweak corrections, and of the parametrization of the photon flux are discussed. |
| title | Electroweak corrections to $τ^+τ^-$ production in ultraperipheral heavy-ion collisions at the LHC |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2504.11391 |