The ATLAS and CMS collaborations at CERN's LHC jointly combined their measurements to pin the Higgs boson mass at 125.11 GeV with an uncertainty of about 0.11 GeV (110 MeV), published in 2024 — the most precise determination of this fundamental parameter since the particle's 2012 discovery.
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The ATLAS and CMS collaborations at CERN's LHC jointly combined their measurements to pin the Higgs boson mass at 125.11 GeV with an uncertainty of about 0.11 GeV (110 MeV), published in 2024 — the most precise determination of this fundamental parameter since the particle's 2012 discovery.
The smallest combined statistical-plus-systematic uncertainty achieved on the mass of the Higgs boson, from combined ATLAS and CMS LHC data.
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Limits Registry. LR-HIGGS-BOSON-DISCOVERY-MASS. Most precise measurement of the Higgs boson mass. 2026.