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Fiducial and differential cross-section measurements of electroweak Wγjj production in pp collisions at s=13 TeV with the ATLAS detector

Aad, G. ; Åkesson, T.P.A. LU orcid ; Astrand, K.S.V. LU ; Doglioni, C. LU ; Ekman, P.A. LU orcid ; Hedberg, V. LU ; Herde, H. LU orcid ; Konya, B. LU ; Lytken, E. LU orcid and Poettgen, R. LU orcid , et al. (2024) In European Physical Journal C 84(10).
Abstract
The observation of the electroweak production of a W boson and a photon in association with two jets, using pp collision data at the Large Hadron Collider at a centre of mass energy of s=13 TeV, is reported. The data were recorded by the ATLAS experiment from 2015 to 2018 and correspond to an integrated luminosity of 140 fb-1. This process is sensitive to the quartic gauge boson couplings via the vector boson scattering mechanism and provides a stringent test of the electroweak sector of the Standard Model. Events are selected if they contain one electron or muon, missing transverse momentum, at least one photon, and two jets. Multivariate techniques are used to distinguish the electroweak Wγjj process from irreducible background... (More)
The observation of the electroweak production of a W boson and a photon in association with two jets, using pp collision data at the Large Hadron Collider at a centre of mass energy of s=13 TeV, is reported. The data were recorded by the ATLAS experiment from 2015 to 2018 and correspond to an integrated luminosity of 140 fb-1. This process is sensitive to the quartic gauge boson couplings via the vector boson scattering mechanism and provides a stringent test of the electroweak sector of the Standard Model. Events are selected if they contain one electron or muon, missing transverse momentum, at least one photon, and two jets. Multivariate techniques are used to distinguish the electroweak Wγjj process from irreducible background processes. The observed significance of the electroweak Wγjj process is well above six standard deviations, compared to an expected significance of 6.3 standard deviations. Fiducial and differential cross sections are measured in a fiducial phase space close to the detector acceptance, which are in reasonable agreement with leading order Standard Model predictions from MadGraph5+Pythia8 and Sherpa. The results are used to constrain new physics effects in the context of an effective field theory. © The Author(s) 2024. (Less)
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Contribution to journal
publication status
published
subject
keywords
Colliding beam accelerators, Hadrons, Heavy ions, Negative ions, Particle beams, Phase space methods, Photons, Positive ions, Two photon processes, A-center, ATLAS detectors, Cross-section measurement, Differential cross-sections, Fiducials, Large Hadron Collider, Large-hadron colliders, Measurements of, Standard deviation, W bosons, Bosons
in
European Physical Journal C
volume
84
issue
10
article number
1064
publisher
Springer Nature
external identifiers
  • scopus:85206942156
ISSN
1434-6044
DOI
10.1140/epjc/s10052-024-13311-6
language
English
LU publication?
yes
id
a028572a-a2f6-4195-9dc8-4780c0a2e542
date added to LUP
2025-09-11 09:06:46
date last changed
2025-10-16 13:34:48
@article{a028572a-a2f6-4195-9dc8-4780c0a2e542,
  abstract     = {{The observation of the electroweak production of a W boson and a photon in association with two jets, using pp collision data at the Large Hadron Collider at a centre of mass energy of s=13 TeV, is reported. The data were recorded by the ATLAS experiment from 2015 to 2018 and correspond to an integrated luminosity of 140 fb-1. This process is sensitive to the quartic gauge boson couplings via the vector boson scattering mechanism and provides a stringent test of the electroweak sector of the Standard Model. Events are selected if they contain one electron or muon, missing transverse momentum, at least one photon, and two jets. Multivariate techniques are used to distinguish the electroweak Wγjj process from irreducible background processes. The observed significance of the electroweak Wγjj process is well above six standard deviations, compared to an expected significance of 6.3 standard deviations. Fiducial and differential cross sections are measured in a fiducial phase space close to the detector acceptance, which are in reasonable agreement with leading order Standard Model predictions from MadGraph5+Pythia8 and Sherpa. The results are used to constrain new physics effects in the context of an effective field theory. © The Author(s) 2024.}},
  author       = {{Aad, G. and Åkesson, T.P.A. and Astrand, K.S.V. 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 Wallin, E.J. and Zwalinski, L.}},
  issn         = {{1434-6044}},
  keywords     = {{Colliding beam accelerators; Hadrons; Heavy ions; Negative ions; Particle beams; Phase space methods; Photons; Positive ions; Two photon processes; A-center; ATLAS detectors; Cross-section measurement; Differential cross-sections; Fiducials; Large Hadron Collider; Large-hadron colliders; Measurements of; Standard deviation; W bosons; Bosons}},
  language     = {{eng}},
  number       = {{10}},
  publisher    = {{Springer Nature}},
  series       = {{European Physical Journal C}},
  title        = {{Fiducial and differential cross-section measurements of electroweak Wγjj production in pp collisions at s=13 TeV with the ATLAS detector}},
  url          = {{http://dx.doi.org/10.1140/epjc/s10052-024-13311-6}},
  doi          = {{10.1140/epjc/s10052-024-13311-6}},
  volume       = {{84}},
  year         = {{2024}},
}