A measurement of the Higgs boson mass in the diphoton decay channel

Abstract

A measurement of the mass of the Higgs boson in the diphoton decay channel is presented. This analysis is based on 35.9fb1^{-1} of proton-proton collision data collected during the 2016 LHC running period, with the CMS detector at a centre-of-mass energy of 13TeV. A refined detector calibration and new analysis techniques have been used to improve the precision of this measurement. The Higgs boson mass is measured to be mH_{H}=125.78 ±0.26 GeV. This is combined with a measurement of mHalready performed in the H→ZZ→4l{l} decay channel using the same data set, giving mH_{H}=125.46 ±0.16 GeV. This result, when further combined with an earlier measurement of mHusing data collected in 2011 and 2012 with the CMS detector, gives a value for the Higgs boson mass of mH_{H}=125.38 ±0.14 GeV. This is currently the most precise measurement of the mass of the Higgs boson

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