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Peter Higgs and Francois Englert shared the 2013 Nobel Prize in Physics for their work on Theory of the Higgs boson. The Higgs boson is a subatomic particle that is thought to be responsible for the mass of all other particles. Higgs and Englert's theory predicted the existence of the Higgs boson, and it was later discovered by scientists at the Large Hadron Collider at CERN in 2012.