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Search for displaced vertices of oppositely charged leptons from decays of long-lived particles in pp collisions at √s=13 TeV with the ATLAS detector

  1. 1.
    SYSNO ASEP0537235
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleSearch for displaced vertices of oppositely charged leptons from decays of long-lived particles in pp collisions at √s=13 TeV with the ATLAS detector
    Author(s) Aad, G. (FR)
    Abbott, B. (US)
    Abbott, D.C. (US)
    Chudoba, Jiří (FZU-D) RID, ORCID
    Hejbal, Jiří (FZU-D) RID, ORCID
    Hladík, Ondřej (FZU-D) ORCID
    Jačka, Petr (FZU-D) ORCID
    Jakoubek, Tomáš (FZU-D) RID, ORCID
    Kepka, Oldřich (FZU-D) RID, ORCID
    Kroll, Jiří (FZU-D) ORCID
    Kupčo, Alexander (FZU-D) RID, ORCID
    Lokajíček, Miloš (FZU-D) RID, ORCID
    Lysák, Roman (FZU-D) RID, ORCID
    Marčišovský, Michal (FZU-D) RID, ORCID
    Mikeštíková, Marcela (FZU-D) RID, ORCID
    Němeček, Stanislav (FZU-D) RID, ORCID
    Penc, Ondřej (FZU-D) ORCID
    Šícho, Petr (FZU-D) RID, ORCID
    Staroba, Pavel (FZU-D) RID, ORCID
    Svatoš, Michal (FZU-D) RID, ORCID
    Taševský, Marek (FZU-D) RID, ORCID
    Number of authors2927
    Article number135114
    Source TitlePhysics Letters. B. - : Elsevier - ISSN 0370-2693
    Roč. 801, Feb (2020), s. 1-21
    Number of pages21 s.
    Languageeng - English
    CountryNL - Netherlands
    KeywordsATLAS ; CERN ; LHC ; S015XL ; mass spectrum: (lepton+ lepton-)
    Subject RIVBF - Elementary Particles and High Energy Physics
    OECD categoryParticles and field physics
    R&D ProjectsLTT17018 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
    Research InfrastructureCERN-CZ II - 90104 - Fyzikální ústav AV ČR, v. v. i.
    Method of publishingOpen access
    Institutional supportFZU-D - RVO:68378271
    UT WOS000508018500036
    EID SCOPUS85076839499
    DOI10.1016/j.physletb.2019.135114
    AnnotationA search for long-lived particles decaying into an oppositely charged lepton pair, μμ , ee , or eμ , is presented using 32.8fb−1 of pp collision data collected at s=13 TeV by the ATLAS detector at the LHC. Candidate leptons are required to form a vertex, within the inner tracking volume of ATLAS, displaced from the primary pp interaction region. No lepton pairs with an invariant mass greater than 12 GeV are observed, consistent with the background expectations derived from data. The detection efficiencies for generic resonances with lifetimes ( cτ ) of 100–1000 mm decaying into a dilepton pair with masses between 0.1–1.0 TeV are presented as a function of pT and decay radius of the resonances to allow the extraction of upper limits on the cross sections for theoretical models. The result is also interpreted in a supersymmetric model in which the lightest neutralino, produced via squark–antisquark production, decays into ℓ+ℓ′−ν ( ℓ,ℓ′=e , μ ) with a finite lifetime due to the presence of R-parity violating couplings.
    WorkplaceInstitute of Physics
    ContactKristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
    Year of Publishing2021
    Electronic addresshttp://hdl.handle.net/11104/0314972
Number of the records: 1  

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