Observation of Wwγ Production and Search for Hγ Production in Proton-Proton Collisions at √s=13 Tev
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 5.9 0.8ðstatÞ 0.8ðsystÞ 0.7ðmodelingÞ 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. © 2024 CERN, for the CMS Collaboration.
Description
Keywords
Bosons, Tellurium compounds, A-center, Center-of-mass energies, Centre-of-mass energies, Higgs boson, Integrated luminosity, Light quarks, Opposite charge, Proton proton collisions, Standard deviation, Transverse momenta, Photons, Higgs; CM; LHC; couplings, CMS experiment, Higgs bosons, hadron colliders, particles and fields, Higgs bosons, Photons, W & Z bosons, Hadron colliders, Physics, ddc:530, 530, Physics and Astronomy, photons, High-Energy Physics, LHC, CERN, CMS, Standard Model, High Energy Physics, W & Z bosons, Higgs bosons; Photons; W & Z bosons; Hadron colliders, info:eu-repo/classification/ddc/530, HIGGS-BOSON, associated production, electron, transverse momentum: missing-energy, lepton, higher-order, 13000 GeV-cms, W: leptonic decay, channel cross section: upper limit, High Energy Physics - Experiment, W: pair production, High Energy Physics - Experiment (hep-ex), [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], dilepton: final state, photon, higher-order: 1, missing-energy, higher-order, 1, p p, Higgs particle: decay modes, channel cross section: measured, transverse momentum, missing-energy, p p: scattering, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], 1, p p, scattering, Higgs particle, associated production, FOS: Physical sciences, Higgs particle, transverse momentum, Higgs particle, coupling, quark, muon, quantum chromodynamics, TeV, coupling, quantum chromodynamics: perturbation theory, Higgs particle: coupling, scattering, Higgs particle: associated production, photon: associated production, p p: colliding beams, coupling: Yukawa, experimental results, Physical Sciences, Higgs-Boson
Fields of Science
0103 physical sciences, 01 natural sciences
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132
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12
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