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| CMS-PAS-HIG-21-019 | ||
| Measurement of the Higgs boson mass and width using the four leptons final state | ||
| CMS Collaboration | ||
| 20 September 2023 | ||
| Abstract: A measurement of the Higgs boson mass and width using the decays to two Z bosons is presented, using the proton-proton data collected by the CMS experiment at the LHC corresponding to an integrated luminosity of 138 fb$ ^{-1} $ at a center-of-mass energy of 13 TeV. The on-shell production of the Higgs boson with the decay $ \mathrm{H} \to \mathrm{Z} \mathrm{Z}^* \to 4\ell $ is used to constrain its mass and width, which yields to the most precise single measurement of the mass to date $ \mathrm{m}_\mathrm{H} = $ 125.08 $ \pm $ 0.12 GeV and an upper limit on the width $ \Gamma_\mathrm{H} < $ 60 MeV at 68% confidence level. A combination of the on-shell and off-shell production of the Higgs boson is used to constrain its width, leading to the observed measurement on the width 2.9 $ ^{+2.3}_{-1.7} $ MeV, in agreement with the standard model prediction of 4.1 MeV. The strength of the off-shell Higgs boson production is also reported. | ||
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Links:
CDS record (PDF) ;
CADI line (restricted) ;
These preliminary results are superseded in this paper, Submitted to PRD. The superseded preliminary plots can be found here. |
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Compact Muon Solenoid LHC, CERN |
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