21 research outputs found

    Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC

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    Results are presented from searches for the standard model Higgs boson in proton–proton collisions at √s = 7 and 8 TeV in the Compact Muon Solenoid experiment at the LHC, using data samples corresponding to integrated luminosities of up to 5.1 fb^(−1) at 7 TeV and 5.3 fb^(−1) at 8 TeV. The search is performed in five decay modes: γγ, ZZ, W^+W^−, τ^+τ^−, and bb. An excess of events is observed above the expected background, with a local significance of 5.0 standard deviations, at a mass near 125 GeV, signalling the production of a new particle. The expected significance for a standard model Higgs boson of that mass is 5.8 standard deviations. The excess is most significant in the two decay modes with the best mass resolution, γγ and ZZ; a fit to these signals gives a mass of 125.3±0.4(stat.)±0.5(syst.) GeV. The decay to two photons indicates that the new particle is a boson with spin different from one

    Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC

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    Forest condition monitoring in the Czech Republic:Annual report Forest Focus/ICP Forests 2005

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    In the yearbook the methods of assessment and evaluation are presented, and the results in the systematic network of plots and intensive monitoring plots (Level I and Level II)
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