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Search for the lepton flavor violating decay Z→eμ in pp collisions at √s = 8 TeV with the ATLAS detector

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    0439799 - FZÚ 2015 RIV US eng J - Journal Article
    Aad, G. - Abbott, B. - Abdallah, J. - Böhm, Jan - Chudoba, Jiří - Havránek, Miroslav - Hejbal, Jiří - Jakoubek, Tomáš - Kepka, Oldřich - Kupčo, Alexander - Kůs, Vlastimil - Lokajíček, Miloš - Lysák, Roman - Marčišovský, Michal - Mikeštíková, Marcela - Němeček, Stanislav - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek - Vrba, Václav … Total 2902 authors
    Search for the lepton flavor violating decay Z→eμ in pp collisions at √s = 8 TeV with the ATLAS detector.
    Physical Review D: Particles, Fields, Gravitation and Cosmology. Roč. 90, č. 7 (2014), "072010-1"-"072010-10". ISSN 1550-7998
    R&D Projects: GA MŠMT(CZ) LG13009
    Institutional support: RVO:68378271
    Keywords : lepton * flavor * Z0 * mass * scattering * enhancement * ATLAS * branching ratio * CERN LHC Coll * mass spectrum * topology
    Subject RIV: BF - Elementary Particles and High Energy Physics
    Impact factor: 4.643, year: 2014

    The ATLAS detector at the Large Hadron Collider is used to search for the lepton flavor violating process Z→eμ in pp collisions using 20.3  fb-1 of data collected at s=8  TeV. An enhancement in the eμ invariant mass spectrum is searched for at the Z-boson mass. The number of Z bosons produced in the data sample is estimated using events of similar topology, Z→ee and μμ, significantly reducing the systematic uncertainty in the measurement. There is no evidence of an enhancement at the Z-boson mass, resulting in an upper limit on the branching fraction, B(Z→eμ)<7.5×10-7 at the 95% confidence level.
    Permanent Link: http://hdl.handle.net/11104/0242990

     
     
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