The CMS collaboration announced the observation of two photons creating two tau leptons in proton–proton collisions. This is the first time this process has been seen in proton–proton collisions using the precise capabilities of the CMS detector. It is also the most precise measurement of the tau’s anomalous magnetic moment and offers a new way to constrain the existence of new physics.

Claire Lee works for the US-CMS collaboration at CERN. When she’s not taking shifts in the CMS control room, ensuring the detectors are functioning properly and safely, she takes guests on tours and teaches them about the amazing particle physics investigated by the variety of experiments there.