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v3.3.3-pre
The photon-induced production of a pair of tau leptons is measured in proton-proton collisions. The analysis uses a data set recorded with the CMS detector at the LHC at a center-of-mass energy of 13 TeV and corresponding to an integrated luminosity of 138 fb−1. Events with a small number of tracks close to the di-tau vertex are selected to isolate the exclusive production mechanism. Limits are set on the anomalous magnetic moment of the tau lepton, improving by a factor of 5 the constraints set during the LEP era.
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Tancredi Carli, Jan Fiete Grosse-Oetringhaus and Michelangelo Mangano