Spin asymmetry and dipole moments in τ-pair production with ultraperipheral heavy ion collisions
Dingyu Shao,
Bin Yan,
Shu-Run Yuan
et al.
Abstract:The anomalous magnetic (MDM) and electric (EDM) dipole moments of the τ lepton serve as crucial indicators of new physics beyond the standard model. Leveraging azimuthal angular asymmetry as a novel tool in ultraperipheral collisions (UPCs), we attain unparalleled precision in the study of these key properties. Driven by the highly linear polarization of coherent photons, this method uniquely enables both the MDM and EDM to contribute to the cos 2ϕ angular distribution in similar magnitudes. Importantly, our a… Show more
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