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dc.contributor.authorSirunyan, A. M.pt_BR
dc.contributor.authorSilveira, Gustavo Gil dapt_BR
dc.contributor.authorCMS Collaborationpt_BR
dc.date.accessioned2020-08-04T03:38:32Zpt_BR
dc.date.issued2020pt_BR
dc.identifier.issn1029-8479pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/212568pt_BR
dc.description.abstractA measurement is presented of the cross section for electroweak production of a Z boson and a photon in association with two jets (Zγjj) in proton-proton collisions. The Z boson candidates are selected through their decay into a pair of electrons or muons. The process of interest, electroweak Zγjj production, is isolated by selecting events with a large dijet mass and a large pseudorapidity gap between the two jets. The measurement is based on data collected at the CMS experiment at √ s = 13 TeV, corresponding to an integrated luminosity of 35.9 fb−1 . The observed significance of the signal is 3.9 standard deviations, where a significance of 5.2 standard deviations is expected in the standard model. These results are combined with published results by CMS at √ s = 8 TeV, which leads to observed and expected respective significances of 4.7 and 5.5 standard deviations. From the 13 TeV data, a value is obtained for the signal strength of electroweak Zγjj production and bounds are given on quartic vector boson interactions in the framework of dimension-eight effective field theory operators.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofThe journal of high energy physics. Trieste. No. 6 (June 2020), 76, 41 p.pt_BR
dc.rightsOpen Accessen
dc.subjectElectroweak interactionen
dc.subjectAceleradores de partículaspt_BR
dc.subjectColisões proton-protonpt_BR
dc.subjectHadron-Hadron scattering (experiments)en
dc.subjectBosons Zpt_BR
dc.titleMeasurement of the cross section for electroweak production of a Z boson, a photon and two jets in proton-proton collisions at √s = 13 TeV and constraints on anomalous quartic couplingspt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb001115876pt_BR
dc.type.originEstrangeiropt_BR


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