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  4. Constraints on the spin-parity and anomalous HVV couplings of the Higgs boson in proton collisions at 7 and 8 TeV
 
research article

Constraints on the spin-parity and anomalous HVV couplings of the Higgs boson in proton collisions at 7 and 8 TeV

Khachatryan, Vardan
•
Sirunyan, Albert M
•
Tumasyan, Armen
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July 13, 2015
Physical Review D [1970-2015]

The study of the spin-parity and tensor structure of the interactions of the recently discovered Higgs boson is performed using the H→ZZ,Zγ*,γγ→4ℓ, H→WW→ℓνℓν, and H→γγ decay modes. The full data set recorded by the CMS experiment during the LHC run 1 is used, corresponding to an integrated luminosity of up to 5.1  fb−1 at a center-of-mass energy of 7 TeV and up to 19.7  fb−1 at 8 TeV. A wide range of spin-two models is excluded at a 99% confidence level or higher, or at a 99.87% confidence level for the minimal gravitylike couplings, regardless of whether assumptions are made on the production mechanism. Any mixed-parity spin-one state is excluded in the ZZ and WW modes at a greater than 99.999% confidence level. Under the hypothesis that the resonance is a spin-zero boson, the tensor structure of the interactions of the Higgs boson with two vector bosons ZZ, Zγ, γγ, and WW is investigated and limits on eleven anomalous contributions are set. Tighter constraints on anomalous HVV interactions are obtained by combining the HZZ and HWW measurements. All observations are consistent with the expectations for the standard model Higgs boson with the quantum numbers JPC=0++.

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Type
research article
DOI
10.1103/PhysRevD.92.012004
ArXiv ID

1411.3441

Author(s)
Khachatryan, Vardan
Sirunyan, Albert M
Tumasyan, Armen
Adam, Wolfgang
Bergauer, Thomas
Dragicevic, Marko
Erö, Janos
Friedl, Markus
Fruehwirth, Rudolf
Ghete, Vasile Mihai
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Date Issued

2015-07-13

Publisher

American Physical Society

Published in
Physical Review D [1970-2015]
Volume

92

Issue

1

Article Number

012004

Subjects

p p: scattering

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p p: colliding beams

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Higgs particle: interaction

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Higgs particle: coupling

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Z0: leptonic decay

•

W: leptonic decay

•

final state: (4lepton)

•

final state: (2lepton)

•

final state: (2photon)

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quantum number

•

CERN LHC Coll

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vector boson

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Higgs particle: decay modes

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spin: 0

•

angular distribution

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experimental results

•

CMS

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p p --> Higgs particle anything

•

Higgs particle --> 2Z0

•

Higgs particle --> Z0 photon

•

Higgs particle --> W+ W-

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Higgs particle --> 2photon

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Z0 --> 2lepton

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W --> lepton neutrino

•

7000 GeV-cms8000 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/20.500.14299/165671
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