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dc.contributor.authorTumasyan, Armenpt_BR
dc.contributor.authorSilveira, Gustavo Gil dapt_BR
dc.contributor.authorBernardes, César Augustopt_BR
dc.contributor.authorCMS Collaborationpt_BR
dc.date.accessioned2022-05-31T01:00:50Zpt_BR
dc.date.issued2022pt_BR
dc.identifier.issn1029-8479pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/239492pt_BR
dc.description.abstractA search for long-lived particles decaying into muon pairs is performed using proton-proton collisions at a center-of-mass energy of 13 TeV, collected by the CMS experi- ment at the LHC in 2017 and 2018, corresponding to an integrated luminosity of 101 fb−1. The data sets used in this search were collected with a dedicated dimuon trigger stream with low transverse momentum thresholds, recorded at high rate by retaining a reduced amount of information, in order to explore otherwise inaccessible phase space at low dimuon mass and nonzero displacement from the primary interaction vertex. No significant excess of events beyond the standard model expectation is found. Upper limits on branching fractions at 95% confidence level are set on a wide range of mass and lifetime hypotheses in beyond the standard model frameworks with the Higgs boson decaying into a pair of long-lived dark photons, or with a long-lived scalar resonance arising from a decay of a b hadron. The limits are the most stringent to date for substantial regions of the parameter space. These results can be also used to constrain models of displaced dimuons that are not explicitly considered in this paper.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofThe journal of high energy physics. Trieste. No. 4 (Apr. 2022), 062, 45 p.pt_BR
dc.rightsOpen Accessen
dc.subjectBeyond standard modelen
dc.subjectAceleradores de partículaspt_BR
dc.subjectDark matteren
dc.subjectColisões proton-protonpt_BR
dc.subjectMatéria escurapt_BR
dc.subjectHadron-hadron scatteringen
dc.titleSearch for long-lived particles decaying into muon pairs in proton-proton collisions at √s = 13 TeV collected with a dedicated high-rate data streampt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb001140741pt_BR
dc.type.originEstrangeiropt_BR


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