Abstract
Measurements of the production of the standard model Higgs boson decaying to a W boson pair are reported. The W+W− candidates are selected in events with an oppositely charged lepton pair, large missing transverse momentum, and various numbers of jets. To select Higgs bosons produced via vector boson fusion and associated production with a W or Z boson, events with two jets or three or four leptons are also selected. The event sample corresponds to an integrated luminosity of 35.9fb−1, collected in pp collisions at s=13TeV by the CMS detector at the LHC during 2016. Combining all channels, the observed cross section times branching fraction is 1.28−0.17+0.18 times the standard model prediction for the Higgs boson with a mass of 125.09GeV. This is the first observation of the Higgs boson decay to W boson pairs by the CMS experiment.
Highlights
In the standard model (SM) of particle physics, the origin of the masses of the W and Z bosons is based on the spontaneous breaking of the electroweak symmetry
The results reported below show a very weak dependence on the Higgs boson mass hypothesis, with the expected signal yield varying within 1% when the signal mass hypothesis is varied within its measured uncertainty
Measurements of the properties of the SM Higgs boson decaying to a W boson pair at the LHC have been reported
Summary
In the standard model (SM) of particle physics, the origin of the masses of the W and Z bosons is based on the spontaneous breaking of the electroweak symmetry. The observation of a new particle at a mass of approximately 125 GeV with Higgs boson-like properties was reported by the ATLAS [7] and CMS [8,9] Collaborations during the first running period of the CERN LHC in proton-proton (pp) collisions at centerof-mass energies of 7 and 8 TeV. Multijet production and fully hadronic top quark pair decays contribute These backgrounds are important for events with low-pT leptons and low m , and in the signal region of the analysis
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