Observation of Electroweak Production of a Same-Sign <i>W</i> Boson Pair in Association with Two Jets in <i>pp</i> Collisions √<i>s</i>=13 TeV with the ATLAS Detector



Aaboud, M, Aad, G, Abbott, B, Abdinov, O, Abeloos, B, Abhayasinghe, DK, Abidi, SH, AbouZeid, OS, Abraham, NL, Abramowicz, H
et al (show 2911 more authors) (2019) Observation of Electroweak Production of a Same-Sign <i>W</i> Boson Pair in Association with Two Jets in <i>pp</i> Collisions √<i>s</i>=13 TeV with the ATLAS Detector. PHYSICAL REVIEW LETTERS, 123 (16). 161801-.

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Abstract

This Letter presents the observation and measurement of electroweak production of a same-sign W boson pair in association with two jets using 36.1  fb^{-1} of proton-proton collision data recorded at a center-of-mass energy of sqrt[s]=13  TeV by the ATLAS detector at the Large Hadron Collider. The analysis is performed in the detector fiducial phase-space region, defined by the presence of two same-sign leptons, electron or muon, and at least two jets with a large invariant mass and rapidity difference. A total of 122 candidate events are observed for a background expectation of 69±7 events, corresponding to an observed signal significance of 6.5 standard deviations. The measured fiducial signal cross section is σ^{fid}=2.89_{-0.48}^{+0.51}(stat)_{-0.28}^{+0.29}(syst)  fb.

Item Type: Article
Additional Information: 30 pages in total, author list starting page 14, 3 figures, 2 tables, final version published in Phys. Rev. Lett. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2017-06
Uncontrolled Keywords: ATLAS Collaboration
Depositing User: Symplectic Admin
Date Deposited: 04 Nov 2019 10:20
Last Modified: 06 Oct 2023 08:02
DOI: 10.1103/PhysRevLett.123.161801
Open Access URL: https://doi.org/10.1103/PhysRevLett.123.161801
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3060512