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Observation of tau lepton pair production in ultraperipheral nucleus-nucleus collisions
The first observation of $\tau$ lepton pair production in ultraperipheral nucleus-nucleus collisions, a pure quantum electrodynamics (QED) process, is presented. The measurement is based on a data sample collected by the CMS experiment at a per nucleon center-of-mass energy of $5.02~\mathrm{TeV}$, a...
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2022
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Acceso en línea: | http://cds.cern.ch/record/2803742 |