Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
2012/07/31 by G. Aad, The ATLAS Collaboration, T. Abajyan +98 · 4 voices · 209 citations
Physics and Astronomy · #Particle physics theoretical and experimental studies #Dark Matter and Cosmic Phenomena #High-Energy Particle Collisions Research
paper · pdf · doi:10.1016/j.physletb.2012.08.020
Abstract
A search for the Standard Model Higgs boson in proton-proton collisions with the ATLAS detector at the LHC is presented. The datasets used correspond to integrated luminosities of approximately 4.8 fb-1 collected at sqrt(s) = 7 TeV in 2011 and 5.8 fb-1 at sqrt(s) = 8 TeV in 2012. Individual searches in the channels H->ZZ^(*)->llll, H->gamma gamma and H->WW->e nu mu nu in the 8 TeV data are combined with previously published results of searches for H->ZZ^(*), WW^(*), bbbar and tau+tau- in the 7 TeV data and results from improved analyses of the H->ZZ^(*)->llll and H->gamma gamma channels in the 7 TeV data. Clear evidence for the production of a neutral boson with a measured mass of 126.0 +/- 0.4(stat) +/- 0.4(sys) GeV is presented. This observation, which has a significance of 5.9 standard deviations, corresponding to a background fluctuation probability of 1.7x10-9, is compatible with the production and decay of the Standard Model Higgs boson.
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