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Search for flavour-changing neutral currents in processes with one top quark and a photon using 81 fb.sup.-1./sup. of pp collisions at √s=13 TeV with the ATLAS experiment

  1. 1.
    SYSNO ASEP0534043
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleSearch for flavour-changing neutral currents in processes with one top quark and a photon using 81 fb-1 of pp collisions at √s=13 TeV with the ATLAS experiment
    Author(s) Aad, G. (FR)
    Abbott, B. (US)
    Abbott, D.C. (US)
    Chudoba, Jiří (FZU-D) RID, ORCID
    Hejbal, Jiří (FZU-D) RID
    Hladík, Ondřej (FZU-D)
    Jačka, Petr (FZU-D)
    Jakoubek, Tomáš (FZU-D) RID, ORCID
    Kepka, Oldřich (FZU-D) RID
    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 authors2932
    Article number135082
    Source TitlePhysics Letters. B. - : Elsevier - ISSN 0370-2693
    Roč. 800, Jan (2020), s. 1-21
    Number of pages21 s.
    Languageeng - English
    CountryNL - Netherlands
    KeywordsATLAS ; effective field theory ; coupling constant: upper limit ; statistical analysis ; neural network ; CERN LHC Coll ; kinematics ; background
    Subject RIVBF - Elementary Particles and High Energy Physics
    OBOR OECDParticles and field physics
    R&D ProjectsLTT17018 GA MŠk - Ministry of Education, Youth and Sports (MEYS)
    Research InfrastructureCERN-CZ II - 90104 - Fyzikální ústav AV ČR, v. v. i.
    Způsob publikováníOpen access
    Institutional supportFZU-D - RVO:68378271
    UT WOS000503832500051
    EID SCOPUS85075235650
    DOI10.1016/j.physletb.2019.135082
    AnnotationA search for flavour-changing neutral current (FCNC) events via the coupling of a top quark, a photon, and an up or charm quark is presented using 81 fb −1 of proton–proton collision data taken at a centre-of-mass energy of 13 TeV with the ATLAS detector at the LHC. Events with a photon, an electron or muon, a b -tagged jet, and missing transverse momentum are selected. A neural network based on kinematic variables differentiates between events from signal and background processes. The data are consistent with the background-only hypothesis, and limits are set on the strength of the tqγ coupling in an effective field theory.
    WorkplaceInstitute of Physics
    ContactKristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
    Year of Publishing2021
    Electronic addresshttp://hdl.handle.net/11104/0312275
Number of the records: 1