Electroweak corrections to $τ^+τ^-$ production in ultraperipheral heavy-ion collisions at the LHC
Year: 2025
Type: preprint
Abstract: 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.
Source: arXiv (Cornell University)
Authors: Dittmaier, Stefan, Engel, Tim, Ariza, Jose Luis Hernando, Pellen, Mathieu
Institution: University of Freiburg
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funder: Deutsche Forschungsgemeinschaft
OpenAlex ID: W6979246449
Cites:
Cited by:
Related to: