Measurements of the Higgs boson width and anomalous HVV couplings from on-shell and off-shell production in the four-lepton final state

Abstract

Studies of on-shell and off-shell Higgs boson production in the four-lepton final state are presented, using data from the CMS experiment at the LHC that correspond to an integrated luminosity of 80.2 fb${}^{-1}$ at a center-of-mass energy of 13 TeV. Joint constraints are set on the Higgs boson total width and parameters that express its anomalous couplings to two electroweak vector bosons. These results are combined with those obtained from the data collected at center-of-mass energies of 7 and 8 TeV, corresponding to integrated luminosities of 5.1 and 19.7 fb${}^{-1}$, respectively. Kinematic information from the decay particles and the associated jets are combined using matrix element techniques to identify the production mechanism and to increase sensitivity to the Higgs boson couplings in both production and decay. The constraints on anomalous HVV couplings are found to be consistent with the standard model expectation in both the on-shell and off-shell regions. Under the assumption of a coupling structure similar to that in the standard model, the Higgs boson width is constrained to be 3.2 ${}_{-2.2}^{+2.8}$ MeV while the expected constraint based on simulation is 4.1 ${}_{-4.0}^{+5.0}$ MeV. The constraints on the width remain similar with the inclusion of the tested anomalous HVV interactions.

Replaced with the published version. All the figures and tables, including additional supplementary figures, can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/HIG-18-002 (CMS Public Pages)

References in corpus (27)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• An Introduction to PYTHIA 8.2
• Matching NLO QCD computations with Parton Shower simulations: the POWHEG method
• Particle-flow reconstruction and global event description with the CMS detector
• An NNLO subtraction formalism in hadron collisions and its application to Higgs boson production at the LHC
• Vector boson pair production at the LHC
• Precise determination of the mass of the Higgs boson and tests of compatibility of its couplings with the standard model predictions using proton collisions at 7 and 8 TeV
• MCFM for the Tevatron and the LHC
• Study of the mass and spin-parity of the Higgs boson candidate via its decays to Z boson pairs
• Measurement of the Higgs boson mass from the $H\to \gamma \gamma$ and $H\to Z{Z}^{\ast }\to 4\ell$ channels with the ATLAS detector using 25 fb${}^{-1}$ of $pp$ collision data
• Higgs boson production in association with top quarks in the POWHEG BOX
• The RooFit toolkit for data modeling
• NNLO predictions for the Higgs boson signal in the H->WW->lnu lnu and H->ZZ->4l decay channels
• Measurements of properties of the Higgs boson decaying into the four-lepton final state in pp collisions at sqrt(s) = 13 TeV
• Anomalous Higgs boson couplings in vector boson fusion at the CERN LHC
• Constraints on the Higgs boson width from off-shell production and decay to Z-boson pairs
• Aspects of CP violation in the HZZ coupling at the LHC
• Limitations and Opportunities of Off-Shell Coupling Measurements
• Constraints on anomalous Higgs boson couplings using production and decay information in the four-lepton final state
• Constraining CP-violating Higgs Sectors at the LHC using gluon fusion
• PHANTOM: a Monte Carlo event generator for six parton final states at high energy colliders
• Production of two Z-bosons in gluon fusion in the heavy top quark approximation
• Beyond Geolocating: Constraining Higher Dimensional Operators in $H\to 4\ell$ with Off-Shell Production and More
• Pseudo-observables in Higgs decays
• Higgs constraints from vector boson fusion and scattering
• Bounding the Higgs Width Using Effective Field Theory

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• Determining the space-time structure of bottom-quark couplings to spin-zero particles