Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/130595
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Type: Journal article
Title: Observation of photon-induced W+W− production in pp collisions at √s=13 TeV using the ATLAS detector
Other Titles: Observation of photon-induced W+W- production in pp collisions at root s=13 TeV using the ATLAS detector
Author: Aad, G.
Abbott, B.
Abbott, D.C.
Abed Abud, A.
Abeling, K.
Abhayasinghe, D.K.
Abidi, S.H.
AbouZeid, O.S.
Abraham, N.L.
Abramowicz, H.
Abreu, H.
Abulaiti, Y.
Acharya, B.S.
Achkar, B.
Adam, L.
Adam Bourdarios, C.
Adamczyk, L.
Adamek, L.
Adelman, J.
Adiguzel, A.
et al.
Citation: Physics Letters B, 2021; 816:136190-1-136190-24
Publisher: Elsevier
Issue Date: 2021
ISSN: 0370-2693
1873-2445
Statement of
Responsibility: 
G. Aad, B. Abbott, D.C. Abbott, A. Abed Abud, K. Abeling, D.K. Abhayasinghe ... Paul Jackson ... et al.
Abstract: This letter reports the observation of photon-induced production of W-boson pairs, γγ→WW. The analysis uses 139 fb−1of LHC proton–proton collision data taken at √s=13 TeV recorded by the ATLAS experiment during the years 2015–2018. The measurement is performed selecting one electron and one muon, corresponding to the decay of the diboson system as WW→e±νμ∓νfinal state. The background-only hypothesis is rejected with a significance of well above 5 standard deviations consistent with the expectation from Monte Carlo simulation. A cross section for the γγ→WWprocess of 3.13 ±0.31(stat.)±0.28(syst.) fb is measured in a fiducial volume close to the acceptance of the detector, by requiring an electron and a muon of opposite signs with large dilepton transverse momentum and exactly zero additional charged particles. This is found to be in agreement with the Standard Model prediction.
Rights: © 2021 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3
RMID: 1000038167
DOI: 10.1016/j.physletb.2021.136190
Appears in Collections:Physics publications

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