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dc.contributor.authorAad, Georges
dc.contributor.authorAbbott, Brad
dc.contributor.authorAbbott, Dale C.
dc.contributor.authorAbed Abud, Adam
dc.contributor.authorAbeling, Kira
dc.contributor.authorAbhayasinghe, Deshan Kavishka
dc.contributor.authorAbidi, Syed Haider
dc.contributor.authorAbouZeid, Ossama Sherif Alexander
dc.contributor.authorAbraham, Nadine L.
dc.contributor.authorAbramowicz, Halina
dc.contributor.authorBjørke, Kristian
dc.contributor.authorBugge, Magnar Kopangen
dc.contributor.authorCameron, David Gordon
dc.contributor.authorCatmore, James Richard
dc.contributor.authorGaronne, Vincent
dc.contributor.authorGramstad, Eirik
dc.contributor.authorHeggelund, Andreas
dc.contributor.authorHellesund, Simen
dc.contributor.authorHåland, Even Simonsen
dc.contributor.authorMorisbak, Vanja
dc.contributor.authorOppen, Henrik
dc.contributor.authorOuld-Saada, Farid
dc.contributor.authorPedersen, Maiken
dc.contributor.authorRead, Alexander Lincoln
dc.contributor.authorRye, Eli Bæverfjord
dc.contributor.authorRøhne, Ole Myren
dc.contributor.authorSandaker, Heidi
dc.contributor.authorVadla, Knut Oddvar Høie
dc.contributor.authorBuanes, Trygve
dc.contributor.authorDjuvsland, Julia Isabell
dc.contributor.authorEigen, Gerald
dc.contributor.authorFomin, Nikolai
dc.contributor.authorLee, Graham Richard
dc.contributor.authorLatour, Bertrand Pascal Christian
dc.contributor.authorLipniacka, Anna
dc.contributor.authorStugu, Bjarne Sandvik
dc.contributor.authorTræet, Are Sivertsen
dc.contributor.authorAbreu, Henso
dc.contributor.authorAbulaiti, Yiming
dc.contributor.authorAcharya, Bobby S.
dc.contributor.authorAchkar, Baida
dc.contributor.authorAdam, Lennart
dc.contributor.authorAdam-Bourdarios, Claire
dc.contributor.authorAdamczyk, Leszek
dc.contributor.authorAdamek, Lukas
dc.contributor.authorAdelman, Jareed
dc.contributor.authorAdigüzel, Aytül
dc.contributor.authorAdorni, Sofia
dc.contributor.authorAdye, Tim
dc.contributor.authorAffolder, Anthony Allen
dc.contributor.authorATLAS, Collaboration
dc.date.accessioned2022-04-01T09:08:06Z
dc.date.available2022-04-01T09:08:06Z
dc.date.created2022-02-22T14:24:56Z
dc.date.issued2021
dc.identifier.issn1126-6708
dc.identifier.urihttps://hdl.handle.net/11250/2989167
dc.description.abstractMeasurements of four-lepton differential and integrated fiducial cross-sections in events with two same-flavour, opposite-charge electron or muon pairs are presented. The data correspond to 139 fb−1 of √s = 13 TeV proton-proton collisions, collected by the ATLAS detector during Run 2 of the Large Hadron Collider (2015–2018). The final state has contributions from a number of interesting Standard Model processes that dominate in different four-lepton invariant mass regions, including single Z boson production, Higgs boson production and on-shell ZZ production, with a complex mix of interference terms, and possible contributions from physics beyond the Standard Model. The differential cross-sections include the four-lepton invariant mass inclusively, in slices of other kinematic variables, and in different lepton flavour categories. Also measured are dilepton invariant masses, transverse momenta, and angular correlation variables, in four regions of four-lepton invariant mass, each dominated by different processes. The measurements are corrected for detector effects and are compared with state-of-the-art Standard Model calculations, which are found to be consistent with the data. The Z → 4ℓ branching fraction is extracted, giving a value of (4.41 ± 0.30) × 10−6. Constraints on effective field theory parameters and a model based on a spontaneously broken B − L gauge symmetry are also evaluated. Further reinterpretations can be performed with the provided information.en_US
dc.language.isoengen_US
dc.publisherSpringeren_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.titleMeasurements of differential cross-sections in four-lepton events in 13 TeV proton-proton collisions with the ATLAS detectoren_US
dc.typeJournal articleen_US
dc.typePeer revieweden_US
dc.description.versionpublishedVersionen_US
dc.rights.holderCopyright CERN, for the benefit of the ATLAS Collaboration. 2021en_US
dc.source.articlenumber5en_US
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode2
dc.identifier.doi10.1007/JHEP07(2021)005
dc.identifier.cristin2004547
dc.source.journalJournal of High Energy Physics (JHEP)en_US
dc.subject.nsiVDP::Kjerne- og elementærpartikkelfysikk: 431en_US
dc.subject.nsiVDP::Nuclear and elementary particle physics: 431en_US
dc.identifier.citationJournal of High Energy Physics (JHEP). 2021, 2021(7):5.en_US
dc.source.volume2021en_US
dc.source.issue7en_US


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