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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.accessioned2019-12-27T04:05:35Zpt_BR
dc.date.issued2019pt_BR
dc.identifier.issn0370-2693pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/203931pt_BR
dc.description.abstractA search for decays of the Higgs and Z boson to pairs of J/ψ or Y (nS) (n = 1, 2, 3) mesons, with their subsequent decay to μ+μ- pairs, is presented. The analysis uses data from proton-proton collisions at √s=13 TeV, collected with the CMS detector at the LHC in 2017 and corresponding to an integrated luminosity of 37.5 fb-¹. While an observation of such a decay with this sample would indicate the presence of physics beyond the standard model, no significant excess is observed. Upper limits at 95% confidence level are placed on the branching fractions of these decays. In the J/ψ pair channel, the limits are 1.8 x 10-3 and 2.2 x 10-6 for the Higgs and Z boson, respectively, while in the combined Y (nS) pair channel, the limits are 1.4 x 10-³ and 1.5 x 10-6, respectively, when the mesons from the Higgs and Z boson decay are assumed to be unpolarized. When fully longitudinal and transverse polarizations are considered the limits reduce by about 22–29% and increase by about 10–13%, respectively.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofPhysics letters. B. Amsterdam. Vol. 797 (Oct. 2019), 134811, 22 p.pt_BR
dc.rightsOpen Accessen
dc.subjectCMSen
dc.subjectAceleradores de partículaspt_BR
dc.subjectStandard model physicsen
dc.subjectColisões proton-protonpt_BR
dc.subjectBosons de higgspt_BR
dc.subjectHiggs bosonen
dc.subjectZ bosonen
dc.subjectBosons Zpt_BR
dc.subjectRare decaysen
dc.titleSearch for Higgs and Z boson decays to J/ψ or Y pairs in the four-muon final state in proton-proton collisions at √s=13 TeVpt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb001105706pt_BR
dc.type.originEstrangeiropt_BR


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