ATLAS detector

Physicists Downcast as New Particle ‘Spotted’ at LHC Vanishes With More Data

Start of LHC’s 2016 Run Suffused With Hopes of a New Particle

This image shows a collision event with a photon pair observed by the CMS detector in proton-collision data collected in 2015 with no magnetic field present. The energy deposits of the two photons are represented by the two large green towers. The mass of the di-photon system is between 700 and 800 GeV. The candidates are consistent with what is expected for prompt isolated photons. Caption & credit © 2016 CERN

Physicists Excited as Prospects for Suspected New Fundamental Particle Improve