Observation of WWγ Production and Search for Hγ Production in Proton-Proton Collisions at √s = 13 TeV
Abstract
The observation of WWγ production in proton-proton collisions at a center-of-mass energy of 13 TeV with an integrated luminosity of 138 fb⁻¹ is presented. The observed (expected) significance is 5.6 (5.1) standard deviations. Events are selected by requiring exactly two leptons (one electron and one muon) of opposite charge, moderate missing transverse momentum, and a photon. The measured fiducial cross section for WWγ is WWγ is 5.9 ± 0.8(stat) ± 0.8(syst) ± 0.7(modeling) fb, in agreement with the next-to-leading order quantum chromodynamics prediction. The analysis is extended with a search for the associated production of the Higgs boson and a photon, which is generated by a coupling of the Higgs boson to light quarks. The result is used to constrain the Higgs boson couplings to light quarks. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000667476Publication status
publishedExternal links
Journal / series
Physical Review LettersVolume
Pages / Article No.
Publisher
American Physical SocietySubject
Higgs bosons; Photons; W & Z bosons; Hadron collidersMore
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