In July 2012, The European Organization for Nuclear Research (CERN) in Geneva announced they had captured a new particle that may be identified with the long-sought Higgs boson in two separate experiments, ATLAS and CMS, both of which independently confirmed the particle’s existence. A world-wide collaboration of more than 5,000 researchers contributed to the discovery. Both collaborations published the article describing the discovery in Physics Letters B. To celebrate this historical discovery, Elsevier are publishing both articles together with a foreword by Peter Higgs and the other scientists that predicted the existence of the so-called Higgs boson.