Measurements of Higgs boson properties in the diphoton decay channel in proton-proton collisions at √s = 13 TeV

Abstract

Measurements of Higgs boson properties in the H ! decay channel are reported. The analysis is based on data collected by the CMS experiment in protonproton collisions at p s = 13TeV during the 2016 LHC running period, corresponding to an integrated luminosity of 35.9 fbð€€€1. Allowing the Higgs mass to oat, the measurement yields a signal strength relative to the standard model prediction of 1:18+0:17 ð€€€0:14 = 1:18+0:12 ð€€€0:11(stat)+0:09 ð€€€0:07(syst)+0:07 ð€€€0:06(theo), which is largely insensitive to the exact Higgs mass around 125 GeV. Signal strengths associated with the di erent Higgs boson production mechanisms, couplings to bosons and fermions, and e ective couplings to photons and gluons are also measured.