Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
The ATLAS Collaboration reported the observation of a new neutral boson in searches for the Standard Model Higgs boson, using proton-proton collision data from the LHC corresponding to about 4.8 fb⁻¹ at √s = 7 TeV (2011) and 5.8 fb⁻¹ at √s = 8 TeV (2012). Combining sensitive decay channels, the analysis found an excess at a mass of about 126.0 GeV with a local significance of 5.9 standard deviations, consistent with the production and decay of a Standard Model Higgs boson. The result, announced jointly with a companion CMS measurement, provided experimental confirmation of the boson associated with the Brout–Englert–Higgs mechanism of electroweak symmetry breaking.