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Observation of Wγγ triboson production in proton-proton collisions at s=13 TeV with the ATLAS detector

Aad, G. ; Åkesson, T.P.A. LU orcid ; Doglioni, C. LU ; Hedberg, V. LU ; Herde, H. LU orcid ; Konya, B. LU ; Lytken, E. LU orcid ; Poettgen, R. LU orcid ; Simpson, N.D. LU and Skorda, E. LU , et al. (2024) In Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 848.
Abstract
This letter reports the observation of W(ℓν)γγ production in proton-proton collisions. This measurement uses the full Run 2 sample of events recorded at a center-of-mass energy of s=13 TeV by the ATLAS detector at the LHC, corresponding to an integrated luminosity of 140 fb−1. Events with a leptonically-decaying W boson and at least two photons are considered. The background-only hypothesis is rejected with an observed and expected significance of 5.6 standard deviations. The inclusive fiducial production cross section of W(eν)γγ and W(μν)γγ events is measured to be σfid=13.8±1.1(stat)+2.1−2.0(syst)±0.1(lumi) fb, in agreement with the Standard Model prediction.
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organization
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type
Contribution to journal
publication status
published
subject
in
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
volume
848
article number
138400
publisher
Elsevier
external identifiers
  • scopus:85184210504
ISSN
0370-2693
DOI
10.1016/j.physletb.2023.138400
language
English
LU publication?
yes
id
70efd924-2ea1-455d-8cf0-f1a8af1ef74e
date added to LUP
2024-03-12 15:28:21
date last changed
2024-03-12 15:30:02
@article{70efd924-2ea1-455d-8cf0-f1a8af1ef74e,
  abstract     = {{This letter reports the observation of W(ℓν)γγ production in proton-proton collisions. This measurement uses the full Run 2 sample of events recorded at a center-of-mass energy of s=13 TeV by the ATLAS detector at the LHC, corresponding to an integrated luminosity of 140 fb−1. Events with a leptonically-decaying W boson and at least two photons are considered. The background-only hypothesis is rejected with an observed and expected significance of 5.6 standard deviations. The inclusive fiducial production cross section of W(eν)γγ and W(μν)γγ events is measured to be σfid=13.8±1.1(stat)+2.1−2.0(syst)±0.1(lumi) fb, in agreement with the Standard Model prediction.}},
  author       = {{Aad, G. and Åkesson, T.P.A. and Doglioni, C. and Hedberg, V. and Herde, H. and Konya, B. and Lytken, E. and Poettgen, R. and Simpson, N.D. and Skorda, E. and Smirnova, O. and Zou, W. and Zwalinski, L.}},
  issn         = {{0370-2693}},
  language     = {{eng}},
  publisher    = {{Elsevier}},
  series       = {{Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics}},
  title        = {{Observation of Wγγ triboson production in proton-proton collisions at s=13 TeV with the ATLAS detector}},
  url          = {{http://dx.doi.org/10.1016/j.physletb.2023.138400}},
  doi          = {{10.1016/j.physletb.2023.138400}},
  volume       = {{848}},
  year         = {{2024}},
}