LHC experiments join forces to zoom in on the Higgs boson

Tuesday, March 17, 2015 - 07:50 in Physics & Chemistry

Today during the 50th session of "Rencontres de Moriond" in La Thuile Italy, ATLAS and CMS presented for the first time a combination of their results on the mass of the Higgs boson. The combined mass of the Higgs boson is mH = 125.09 ± 0.24 (0.21 stat. ± 0.11 syst.) GeV, which corresponds to a measurement precision of better than 0.2%. The Higgs boson is an essential ingredient of the Standard Model of particle physics, the theory that describes all known elementary particles and their interactions. The Brout-Englert-Higgs mechanism, through which the existence of the Higgs boson was predicted, is believed to give mass to all elementary particles. It is the most precise measurement of the Higgs boson mass yet and among the most precise measurements performed at the LHC to date.

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