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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, Skolan för teknikvetenskap (SCI), Fysik, Partikel- och astropartikelfysik.
KTH, Skolan för teknikvetenskap (SCI), Fysik, Partikel- och astropartikelfysik.
KTH, Skolan för teknikvetenskap (SCI), Fysik, Partikel- och astropartikelfysik.ORCID-id: 0000-0003-3867-0336
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Rekke forfattare: 28802014 (engelsk)Inngår i: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 113, nr 14, s. 141803-Artikkel i tidsskrift (Fagfellevurdert) 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.

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2014. Vol. 113, nr 14, s. 141803-
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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, id: diva2:769060
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QC 20141205

Tilgjengelig fra: 2014-12-05 Laget: 2014-12-05 Sist oppdatert: 2019-12-04bibliografisk kontrollert

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