Collaboration, ATLAS;
(2021)
Observation of photon-induced W+W− production in pp collisions at s=13 TeV using the ATLAS detector.
Physics Letters B
, 816
, Article 136190. 10.1016/j.physletb.2021.136190.
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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.
| Type: | Article |
|---|---|
| Title: | Observation of photon-induced W+W− production in pp collisions at s=13 TeV using the ATLAS detector |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.physletb.2021.136190 |
| Publisher version: | http://dx.doi.org/10.1016/j.physletb.2021.136190 |
| Language: | English |
| Additional information: | Copyright © 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. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10126465 |
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