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

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

Sirunyan, Albert M
•
Tumasyan, Armen
•
Adam, Wolfgang
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June 12, 2019
Physical Review D

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.

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Type
research article
DOI
10.1103/PhysRevD.99.112003
ArXiv ID

1901.00174

Author(s)
Sirunyan, Albert M
Tumasyan, Armen
Adam, Wolfgang
Ambrogi, Federico
Asilar, Ece
Bergauer, Thomas
Brandstetter, Johannes
Dragicevic, Marko
Erö, Janos
Escalante Del Valle, Alberto
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Date Issued

2019-06-12

Publisher

American Physical Society

Published in
Physical Review D
Volume

99

Issue

11

Article Number

112003

Subjects

p p: scattering

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p p: colliding beams

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vector boson: pair production

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Higgs particle: width

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width: upper limit

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Higgs particle: coupling

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Higgs particle: coupling constant

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Higgs particle: hadroproduction

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Higgs particle: associated production

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Higgs particle: off-shell

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on-shell

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Higgs particle: leptonic decay

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lepton: multiple production

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mass spectrum: (4lepton)

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coupling: anomaly

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electroweak interaction

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CERN LHC Coll

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sensitivity

•

structure

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CMS

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numerical calculations: Monte Carlo

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experimental results

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13000 GeV-cms

Editorial or Peer reviewed

REVIEWED

Written at

OTHER

EPFL units
LPHE  
Available on Infoscience
February 17, 2020
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/166102
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