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Evidence for Electroweak Production of W(+/-)W(+/-)jj in pp Collisions at root s=8 TeV with the ATLAS Detector
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
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Number of Authors: 2880
2014 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 113, no 14, 141803- p.Article in journal (Refereed) Published
Abstract [en]

This Letter presents the first study of W(+/-)W(+/-)jj, same-electric-charge diboson production in association with two jets, using 20.3 fb(-1) of proton-proton collision data at root s = 8 TeV recorded by the ATLAS detector at the Large Hadron Collider. Events with two reconstructed same-charge leptons (e(+/-)e(+/-), e(+/-)mu(+/-), and mu(+/-)mu(+/-)) and two or more jets are analyzed. Production cross sections are measured in two fiducial regions, with different sensitivities to the electroweak and strong production mechanisms. First evidence for W(+/-)W(+/-)jj production and electroweak-only W(+/-)W(+/-)jj production is observed with a significance of 4.5 and 3.6 standard deviations, respectively. The measured production cross sections are in agreement with standard model predictions. Limits at 95% confidence level are set on anomalous quartic gauge couplings.

Place, publisher, year, edition, pages
2014. Vol. 113, no 14, 141803- p.
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Physical Sciences
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URN: urn:nbn:se:kth:diva-157063DOI: 10.1103/PhysRevLett.113.141803ISI: 000344031200004Scopus ID: 2-s2.0-84908032912OAI: oai:DiVA.org:kth-157063DiVA: diva2:769060
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QC 20141205

Available from: 2014-12-05 Created: 2014-12-05 Last updated: 2017-12-05Bibliographically approved

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Strandberg, Jonas

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