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Measurements of four-lepton production at the Z resonance in pp collisions at √s = 7 and 8 TeV with ATLAS

dc.contributor.authorBuanes, Trygveeng
dc.contributor.authorDale, Ørjaneng
dc.contributor.authorEigen, Geraldeng
dc.contributor.authorKastanas, Alexeng
dc.contributor.authorLiebig, Wolfgangeng
dc.contributor.authorLipniacka, Annaeng
dc.contributor.authorRosendahl, Peter Lundgaardeng
dc.contributor.authorSandaker, Heidieng
dc.contributor.authorSjursen, Therese B.eng
dc.contributor.authorSmestad, Lillianeng
dc.contributor.authorStugu, Bjarneeng
dc.contributor.authorUgland, Mareneng
dc.contributor.authorBugge, Larseng
dc.contributor.authorBugge, Magnar Kopangeneng
dc.contributor.authorCameron, David Gordoneng
dc.contributor.authorCatmore, James Richardeng
dc.contributor.authorCzyczula, Zofiaeng
dc.contributor.authorGjelsten, Børge Kileeng
dc.contributor.authorGramstad, Eirikeng
dc.contributor.authorOuld-Saada, Farideng
dc.contributor.authorPedersen, Maikeneng
dc.contributor.authorPylypchenko, Yuriyeng
dc.contributor.authorRead, Alexander Lincolneng
dc.contributor.authorRøhne, Ole Myreneng
dc.contributor.authorStapnes, Steinareng
dc.contributor.authorStrandlie, Areeng
dc.contributor.authorAad, Georgeseng
dc.contributor.authorAbbott, Bradeng
dc.contributor.authorAbdallah, Jalaleng
dc.contributor.authorAbdel Khalek, Samaheng
dc.contributor.authorAbdinov, Ovsat Bahram oglueng
dc.contributor.authorAben, Rosemarieeng
dc.contributor.authorAbi, Babakeng
dc.contributor.authorAbolins, Mariseng
dc.contributor.authorAbouZeid, Hasseng
dc.contributor.authorAbramowicz, Halinaeng
dc.contributor.authorAbreu, Hensoeng
dc.contributor.authorAbreu, Rômulo F.eng
dc.contributor.authorAdamczyk, Leszekeng
dc.contributor.authorAdams, Davideng
dc.contributor.authorAdelman, Jareedeng
dc.contributor.authorAdomeit, Stefanieeng
dc.contributor.authorAgatonovic-Jovin, Tatjanaeng
dc.contributor.authorAguilar Saavedra, Juan Antonioeng
dc.contributor.authorAgustoni, Marcoeng
dc.contributor.authorAharrouche, Mohamedeng
dc.contributor.authorAhlen, Steveneng
dc.contributor.authorAhmad, Aharroucheeng
dc.contributor.authorÅkesson, Torsten P.A.eng
dc.contributor.authorAkimov, Andreieng
dc.contributor.authorATLAS, Collaborationeng
dc.date.accessioned2015-05-15T11:39:48Z
dc.date.available2015-05-15T11:39:48Z
dc.date.issued2014-06-13eng
dc.identifier.issn0031-9007en_US
dc.identifier.issn1079-7114en_US
dc.identifier.urihttps://hdl.handle.net/1956/9884
dc.description.abstractMeasurements of four-lepton (4ℓ, ℓ=e,μ) production cross sections at the Z resonance in pp collisions at the LHC with the ATLAS detector are presented. For dilepton and four-lepton invariant mass regions mℓ+ℓ−>5  GeV and 80<m4ℓ<100  GeV, the measured cross sections are 76±18(stat)±4(syst)±1.4(lumi)  fb and 107±9(stat)±4(syst)±3.0(lumi)  fb at s√=7 and 8 TeV, respectively. By subtracting the nonresonant 4ℓ production contributions and normalizing with Z→μ+μ− events, the branching fraction for the Z boson decay to 4ℓ is determined to be (3.20±0.25(stat)±0.13(syst))×10−6, consistent with the standard model prediction.en_US
dc.language.isoengeng
dc.publisherAmerican Physical Societyen_US
dc.rightsAttribution CC BYeng
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/eng
dc.titleMeasurements of four-lepton production at the Z resonance in pp collisions at √s = 7 and 8 TeV with ATLASen_US
dc.typePeer reviewed
dc.typeJournal article
dc.date.updated2015-04-09T06:15:26Zen_US
dc.description.versionpublishedVersionen_US
dc.rights.holderCopyright 2014 CERN, for the ATLAS Collaborationen_US
dc.source.articlenumber231806
dc.identifier.doihttps://doi.org/10.1103/physrevlett.112.231806
dc.identifier.cristin1148920
dc.source.journalPhysical Review Letters
dc.source.40112
dc.source.1423
dc.subject.nsiVDP::Mathematics and natural scienses: 400::Physics: 430::Nuclear and elementary particle physics: 431en_US
dc.subject.nsiVDP::Matematikk og naturvitenskap: 400::Fysikk: 430::Kjerne- og elementærpartikkelfysikk: 431nob


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