Physics

On the edge of stability

Print edition : November 27, 2015

In July 2012, scientists at CERN claimed the discovery of a new subatomic particle "consistent" with the long-sought Higgs boson that helps explain what gives all matter in the universe size and shape. This image shows a typical candidate event, including two high-energy photons (depicted by red towers). The yellow lines are the measured tracks of other particles produced in the collision. The pale blue volume shows the CMS crystal calorimeter barrel. Photo: CERN/AP

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