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

Aad G.
•
Abbott B.
•
Abeling K.
altro
Zwalinski L.
2024
  • journal article

Periodico
PHYSICS LETTERS. SECTION B
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.
DOI
10.1016/j.physletb.2023.138400
Archivio
https://hdl.handle.net/11390/1272064
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85184210504
https://ricerca.unityfvg.it/handle/11390/1272064
Diritti
open access
google-scholar
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