Observation ofγγ→ττin proton-proton collisions and limits on the anomalous electromagnetic moments of the τ lepton
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The production of a pair of τ leptons via photon-photon fusion,γγ→ττ, is observed for the first time in proton-proton collisions, with a significance of 5.3 standard deviations. This observation is based on a data set recorded with the CMS detector at th... ...
