Browsing by Subject "diphoton"

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    A precision measurement of the Higgs boson mass in the diphoton decay channel
    (2024-07) Schroeder, Neil
    A measurement of the mass of the Higgs boson has been performed in the diphoton decay channel. This analysis is based on 138 fb⁻¹ of pp collision data collected in 2016-2018 with the CMS detector at the LHC at a center-of-mass energy of 13 TeV. The mass is measured to be 𝐦𝐇 = 125.574 ± 0.088 (stat.) ± 0.121 (syst.) GeV. This thesis summarizes the strategy of this measurement with emphasis on the methods employed to mitigate and quantify the main sources of systematic uncertainty.