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Determination of the Relative Sign of the Higgs Boson Couplings to W and Z Bosons Using WH Production via Vector-Boson Fusion with the ATLAS Detector

Aad, G. ; Åkesson, T.P.A. LU orcid ; Doglioni, C. LU ; Ekman, P.A. LU ; Hedberg, V. LU ; Herde, H. LU orcid ; Konya, B. LU ; Lytken, E. LU orcid ; Poettgen, R. LU orcid and Simpson, N.D. LU , et al. (2024) In Physical Review Letters 133(14).
Abstract
The associated production of Higgs and W bosons via vector-boson fusion is highly sensitive to the relative sign of the Higgs boson couplings to W and Z bosons. In this Letter, two searches for this process are presented, using 140  fb^{-1} of proton-proton collision data at sqrt[s]=13  TeV recorded by the ATLAS detector at the LHC. The first search targets scenarios with opposite-sign couplings of the W and Z bosons to the Higgs boson, while the second targets standard model-like scenarios with same-sign couplings. Both analyses consider Higgs boson decays into a pair of b quarks and W boson decays with an electron or muon. The data exclude the opposite-sign coupling hypothesis with a significance beyond 5σ, and the observed (expected)... (More)
The associated production of Higgs and W bosons via vector-boson fusion is highly sensitive to the relative sign of the Higgs boson couplings to W and Z bosons. In this Letter, two searches for this process are presented, using 140  fb^{-1} of proton-proton collision data at sqrt[s]=13  TeV recorded by the ATLAS detector at the LHC. The first search targets scenarios with opposite-sign couplings of the W and Z bosons to the Higgs boson, while the second targets standard model-like scenarios with same-sign couplings. Both analyses consider Higgs boson decays into a pair of b quarks and W boson decays with an electron or muon. The data exclude the opposite-sign coupling hypothesis with a significance beyond 5σ, and the observed (expected) upper limit set on the cross section for vector-boson fusion WH production is 9.0 (8.7) times the standard model value at 95% confidence level. (Less)
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author collaboration
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
article, boson
in
Physical Review Letters
volume
133
issue
14
article number
141801
publisher
American Physical Society
external identifiers
  • scopus:85206872892
  • pmid:39423379
ISSN
1079-7114
DOI
10.1103/PhysRevLett.133.141801
language
English
LU publication?
yes
id
7eba7ce1-10cc-46ed-9693-912abc0a9531
date added to LUP
2025-08-29 14:34:52
date last changed
2025-08-30 04:02:01
@article{7eba7ce1-10cc-46ed-9693-912abc0a9531,
  abstract     = {{The associated production of Higgs and W bosons via vector-boson fusion is highly sensitive to the relative sign of the Higgs boson couplings to W and Z bosons. In this Letter, two searches for this process are presented, using 140  fb^{-1} of proton-proton collision data at sqrt[s]=13  TeV recorded by the ATLAS detector at the LHC. The first search targets scenarios with opposite-sign couplings of the W and Z bosons to the Higgs boson, while the second targets standard model-like scenarios with same-sign couplings. Both analyses consider Higgs boson decays into a pair of b quarks and W boson decays with an electron or muon. The data exclude the opposite-sign coupling hypothesis with a significance beyond 5σ, and the observed (expected) upper limit set on the cross section for vector-boson fusion WH production is 9.0 (8.7) times the standard model value at 95% confidence level.}},
  author       = {{Aad, G. and Åkesson, T.P.A. and Doglioni, C. and Ekman, P.A. and Hedberg, V. and Herde, H. and Konya, B. and Lytken, E. and Poettgen, R. and Simpson, N.D. and Smirnova, O. and Zwalinski, L.}},
  issn         = {{1079-7114}},
  keywords     = {{article; boson}},
  language     = {{eng}},
  number       = {{14}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review Letters}},
  title        = {{Determination of the Relative Sign of the Higgs Boson Couplings to W and Z Bosons Using WH Production via Vector-Boson Fusion with the ATLAS Detector}},
  url          = {{http://dx.doi.org/10.1103/PhysRevLett.133.141801}},
  doi          = {{10.1103/PhysRevLett.133.141801}},
  volume       = {{133}},
  year         = {{2024}},
}