In the Guardian, on Wednesday, 4 July 2012, Ian Sample writes that ‘[t]here comes a time in a scientist’s life when the weight of evidence can no longer be ignored. That moment came today for physicists at Cern, near Geneva, home of the Large Hadron Collider, who announced overwhelming evidence for the obscure but profoundly important Higgs boson, the particle that sparked the greatest hunt in modern science. In presentations given to a packed auditorium at the laboratory on Wednesday morning, and webcast around the world, the leaders of two research teams, who worked independently of each other, said they had spotted a new particle amid the microscopic flashes of primordial fire created inside the world’s most powerful atom smasher. Cern stopped short of claiming official discovery of the Higgs boson, even as many physicists conceded the evidence was now so compelling they had surely found the missing particle. Formal confirmation of the discovery is expected within months, though it could take several years for scientists to work out whether they have found the simplest kind of Higgs particle that theories predict, or part of a more complex picture: for example, one of a larger family of Higgs bosons’.
And here is the ever-trustworthy BBC telling us more in documentary form: ‘Onthe 4th July 2012the Higgs Boson was found with a mass of 125-126 GeV. What is it and why was it soo important to create a multi billion dollar device to detect it’.
 Ian Sample, “Higgs boson: it’s unofficial! Cern scientists discover missing particle” The Guardian (04 July 2012). http://www.guardian.co.uk/science/2012/jul/04/higgs-boson-cern-scientists-discover.